Suppose a scientist wants to test a new drug to fight the flu. The scientist injects the drug into three people with the flu. The scientist injects a harmless solution into three other people with the flu.|||The variable group is the drug.
The control is the people who get the harmless solution.|||Think of the harmless drug like a placebo, if that makes it easier... He is administering the drug this way so he can see whether or not the drug has any affect on the flu patients. Think of what he is changing in order to test the drug (the variable) and what he is holding constant; that should give you your answer...|||The control group is the harmless solution, and the variable group is the flu group.
Saturday, December 17, 2011
What are key institutions that the dominant or majority group must control in order to maintain its power.?
What are some key institutions that the dominant or majority group must control in order to maintain its power? I am having a little trouble here....|||The people, you have to get and maintain a good relationship with people to back you and help out, but you should be willing to 鈥?pay it forward 鈥?as well, within reason. Things like businesses and whatknot like I said STRIVE on good relationships, with other businesses, customers, etc. To help keep them afloat. Most businesses fail either due to horrible customer relations, which can lead to horrible customer feedback, and or they were a good company but the high ups got greedy and charged way too much or added bills or whatever..or new management came in and didnt follow the previous managements cues or completely flipped the business and not enough people bought into it. The people always are the key to me. You have to retain loyal customers, develope new ones, as well as look out for future acquisitions.|||There is only one institution to which, as you put it the dominant or majority group control and are doing it very effectively. This very day. It is being used in 1791 a very learned gentleman. I believe made a statement, " Allow me to issue and control a nation's currency on I care not who makes its laws" and that was made by a fairly prominent banker whose firm is still very active and very much in control along with about nine other people.The banks make the deals they control the Treasury who controls the government.Contrary to how people think the US Federal reserve is a private institution, The Bank of England is a private institution the Bundesbank in Germany is a private institution and et cetera and et cetera are all the big world banks are privately owned there is where your trouble will end or begin in understanding corporate world finance.
When doing an experiment, what is the difference between a control group & an experimental group?
Please give an example.|||Your control group is the thing you do not change.
The experimental group is the thing that you do change.
For example, if you are testing how sunlight affects plants your control group would be a plan getting the necessary sunlight to grow.
Your experimental group would be a plant getting too much sunlight, or a plant that does not get any sunlight at all.
The experimental group is the thing that you do change.
For example, if you are testing how sunlight affects plants your control group would be a plan getting the necessary sunlight to grow.
Your experimental group would be a plant getting too much sunlight, or a plant that does not get any sunlight at all.
How would a control group of athletes differ from the experimental group?
This ia a biology question i'm stuck with.|||the experimental group sees a change - say nutrition or exercise program
the control group stays the same.
the control group stays the same.
What is the definition of a control group and an experimental group?
Control group
In an experiment or clinical trial) a group of subjects closely resembling the treatment group in many demographic variables but not receiving the active medication or factor under study and thereby serving as a comparison group when treatment results are evaluated.
A control is as close to the experimental group as you can get, but doesn't receive what ever treatment the experimental group gets. If you had to many factors being used on an experimental group you would never know if the "treatment" was what was causing what ever effect took place.|||Control group is the group that is held constant and not experimented with. Experimental is the group tampered with.
In an experiment or clinical trial) a group of subjects closely resembling the treatment group in many demographic variables but not receiving the active medication or factor under study and thereby serving as a comparison group when treatment results are evaluated.
A control is as close to the experimental group as you can get, but doesn't receive what ever treatment the experimental group gets. If you had to many factors being used on an experimental group you would never know if the "treatment" was what was causing what ever effect took place.|||Control group is the group that is held constant and not experimented with. Experimental is the group tampered with.
How do experimental and control group affect in the experimental research?
These two groups are to show whether a particular drug or any other type of experiment affect the final outcome. For example, Cold Medicine may be given to people with Swine Flu, while the control group receives another substance to see if the outcome is for the better or worse.
What is experimental group and what is control group?
im doing a lab report and it says to describe the experimental group and control group, my lab report is over bacteria %26amp; disinfectants lab.....help!!!|||control group is under normal conditions, experimental group is with some variation you control|||The difference is that the experimental group you are trying something on such as the disinfectant on bacteria
The control group would just allow the bacteria to grow without the disinfectant|||Control group is the one that you don't change.
For example if you are doing a experiement on the affect of fertilizer on plant growth (sorry can't think of a better example) you will have one that has no fertilizer on it. This is the control and you do this to show that the plants aren't just growing well because of other conditions rather then your input variable/ independant (the fertilizer).
So logically the experiment group is the groups that you change the input variable. In the example I gave it would be the amount of fertilizer you put in.|||There is a person or persons doing the experiment.
The experimental group is the one on which the disinfectant will be used.
The control group is the one on which no disinfectant will be used.
The person(s) tabulating the results of the experiment must not know which is the experimental group and which is the control group so that this person(s) bias will not affect the observed results.|||Easy. The whole thing is part of the experiment. Whe you are testing a group of bacteria ( it must all be the same kind and simular in everyway.)
The bacteria is broken into 2 or 3 groups depending on your study. If it is only 2 groups , One group is the control group. This control group has NOTHING done to it. It is just to observe and compare with the second group, the experimental group. The experimental group is the one that gets tested or the one that things are applied to.
If it is a 3 group experiement there is 2 control groups(double blind groups) Hope this helps.|||The experimental group is the one that receives the treatment and the control group is not affected.
In your lab, the experimental group would receive the disinfectant and the control group would not. In this way you can observe what effects the specific disinfectant has on the bacteried judged by the control group.
The control group would just allow the bacteria to grow without the disinfectant|||Control group is the one that you don't change.
For example if you are doing a experiement on the affect of fertilizer on plant growth (sorry can't think of a better example) you will have one that has no fertilizer on it. This is the control and you do this to show that the plants aren't just growing well because of other conditions rather then your input variable/ independant (the fertilizer).
So logically the experiment group is the groups that you change the input variable. In the example I gave it would be the amount of fertilizer you put in.|||There is a person or persons doing the experiment.
The experimental group is the one on which the disinfectant will be used.
The control group is the one on which no disinfectant will be used.
The person(s) tabulating the results of the experiment must not know which is the experimental group and which is the control group so that this person(s) bias will not affect the observed results.|||Easy. The whole thing is part of the experiment. Whe you are testing a group of bacteria ( it must all be the same kind and simular in everyway.)
The bacteria is broken into 2 or 3 groups depending on your study. If it is only 2 groups , One group is the control group. This control group has NOTHING done to it. It is just to observe and compare with the second group, the experimental group. The experimental group is the one that gets tested or the one that things are applied to.
If it is a 3 group experiement there is 2 control groups(double blind groups) Hope this helps.|||The experimental group is the one that receives the treatment and the control group is not affected.
In your lab, the experimental group would receive the disinfectant and the control group would not. In this way you can observe what effects the specific disinfectant has on the bacteried judged by the control group.
What is the control group the same as? The independent or dependent variable?
the experimental group as well.|||Independent - Control
Dependent - Experimental
This can easily be remembered as the Independent variable is constant and "controls" the (depend)ent variable, that changes (depend)ing on the the control, thus making the Independent variable what you are experimenting.
Dependent - Experimental
This can easily be remembered as the Independent variable is constant and "controls" the (depend)ent variable, that changes (depend)ing on the the control, thus making the Independent variable what you are experimenting.
What is the control group in an experiment?
a. makes the experiment valid
b. is an additional replicate for statistical purposes
c. reduces the experimental errors
d. minimizes experimental inaccuracy
e. allows a standard of comparison for the experimental group|||E|||E. because the control group is the one that is like your basis of differentiating the experimebtal group from it|||E. It's the group you don't mess with so you can compare to see if your other variables had an effect.
b. is an additional replicate for statistical purposes
c. reduces the experimental errors
d. minimizes experimental inaccuracy
e. allows a standard of comparison for the experimental group|||E|||E. because the control group is the one that is like your basis of differentiating the experimebtal group from it|||E. It's the group you don't mess with so you can compare to see if your other variables had an effect.
Is there an easy way to determine if you're in the Control group in a drug test?
A few years ago, my wife was given the opportunity to participate in a drug trial. This was for an experimental medication that would have been helpful for her so long as she wasn't wasting her time on the placebo. Ultimately, we decided against participating because we did not trust the doctor and we did not want to go through all the trouble of commuting downtown every week when there was a 50% chance of taking the placebo.|||No, there's no easy way to tell.
The placebo effect happens because people have positive thoughts about the possible treatment they are receiving.
While I can certainly understand not wanting to drive or take the risk of getting the placebo, a double blind test is the only way to tell if a drug is effective or not.
And the placebo effect is very real. It's a testament to how positive thoughts can have a positive effect on the body.|||It depends on the drug being tested, but theoretically, you're not supposed to be able to tell.
Some active drugs will make you nauseated, euphoric, depressed, jittery, or some other side effect. If you experienced those effects, you'd know you had the active drug. Placebo shouldn't have any effects like th t (but people will still report them... shows what the power of thought will do to you!)
Some clinical trials do a crossover, so that people on the placebo and active drug switch. That makes each person his or her own control. Not all studies are set up that way, though.
It's too bad that the study didn't work out for you. Clincial trials often demand a lot in terms of time and effort in exchange for free medication and medical care. Sometimes even the control group does better because of all the close attention.
The placebo effect happens because people have positive thoughts about the possible treatment they are receiving.
While I can certainly understand not wanting to drive or take the risk of getting the placebo, a double blind test is the only way to tell if a drug is effective or not.
And the placebo effect is very real. It's a testament to how positive thoughts can have a positive effect on the body.|||It depends on the drug being tested, but theoretically, you're not supposed to be able to tell.
Some active drugs will make you nauseated, euphoric, depressed, jittery, or some other side effect. If you experienced those effects, you'd know you had the active drug. Placebo shouldn't have any effects like th t (but people will still report them... shows what the power of thought will do to you!)
Some clinical trials do a crossover, so that people on the placebo and active drug switch. That makes each person his or her own control. Not all studies are set up that way, though.
It's too bad that the study didn't work out for you. Clincial trials often demand a lot in terms of time and effort in exchange for free medication and medical care. Sometimes even the control group does better because of all the close attention.
Any ideas on what should be our control group? And our treatment group?
We are doing an experiment to discover if sugar augments short term memory. We really need help!|||Your control group could receive a placebo (e.g., a cookie prepared with a sugar substitute). Your experimental group receives a similar cookie, but one prepared in a traditional way (with sugar). Have both groups take a short term memory test both before and after the cookie. Then compare the results.
Good luck,
~Dr. B.~
Good luck,
~Dr. B.~
What is the control group and the controlled variables in this experiment?
Agricultural scientists were concerned about the effect of air pollution, sulfur dioxide in particular, on soybean production in fields adjacent to coal-powdered power plants. Based on initial investigations, they proposed that sulfur dioxide in high concentrations would reduce reproduction in soybeans. They designed a experiment to test this hypothesis. In this experiment 48 soybean plants, just beginning to produce flowers, were divided into two groups, treatment, and no treatment. The 24 treated were divided into four groups of 6. One group of 6 treated plants was placed in a fumigation chamber and exposed to 0.6 ppm of sulfur dioxide for 4 hours to stimulate sulfur dioxide emissions from a power plant. The experiment was repeated on the remaining three treated treated groups. The no-treatment plants were returned to the greenhouse. When the beans matured, the number of bean pods, the number of seeds per pod, and weight of pods were determined for each plant.|||The controlled variable is the exposure vs. non-exposure to sulfur dioxide. The control group i.e. the no-treatment plants, was not exposed to sulfur dioxide.
What is the control group of my science experiment?
What does the effect of salt have on the melting of ice.|||the control group would just be a piece of ice in a specific dish at the same temperature each time you perform the experiment. one thing too you may want to think about is to make the ice from the same amount of water. there's a lot of variables to think about like temperature, size of ice or water it's made from, the dish the ice sits in, etc.
good luck.|||Well any ice that DOES NOT have any salt on it is the control group (also known as placebo)|||The control would be where the dependent variable has a change of 0. You are testing whether salt affects the melting point, so the control is what the melting point is when there is no salt present.|||Set up 2 experiments, exactly the same. One add salt to the ice and the other, DONT add salt. then you monitor the melting rates of the ice in the two setups. The one without salt is the control. You'll compare the results of the experimental (with salt) to the control (no salt)
good luck.|||Well any ice that DOES NOT have any salt on it is the control group (also known as placebo)|||The control would be where the dependent variable has a change of 0. You are testing whether salt affects the melting point, so the control is what the melting point is when there is no salt present.|||Set up 2 experiments, exactly the same. One add salt to the ice and the other, DONT add salt. then you monitor the melting rates of the ice in the two setups. The one without salt is the control. You'll compare the results of the experimental (with salt) to the control (no salt)
What is a control group And scincetific Method?
I NEED to know what it is for my homework so PLEASE help me!!!!!!!|||the control group is the group in which a variable (the one being tested) is not manipulated. it is the group where you usually know what happens. for instance:
you have two cats that eat the same food and are the same breed age and gender. you buy new food for one and keep other on the same old food. the cat on the old food is the control.|||A group that is treated exactly the same as the experimental group. A scientific method refers to a body of techniques for investigating phenomena, aquireing new knowledge, or correcting and integrating previous knowledge.|||control group is when you do and experiment during the scientific method, two groups one called the CONTROL group does the experiment regular while the other group adds anything to it.|||7th grade math homework, am i right.
you have two cats that eat the same food and are the same breed age and gender. you buy new food for one and keep other on the same old food. the cat on the old food is the control.|||A group that is treated exactly the same as the experimental group. A scientific method refers to a body of techniques for investigating phenomena, aquireing new knowledge, or correcting and integrating previous knowledge.|||control group is when you do and experiment during the scientific method, two groups one called the CONTROL group does the experiment regular while the other group adds anything to it.|||7th grade math homework, am i right.
What's the difference between a control and a control group in biology?
Is there any difference? If so, what?|||Basically the same thing. When you study groups lets say certain drug in mice we have the treatment group and a control group as baseline to compare to treatment to see if there is effect. So geoups you use when you use more individuals
Now control you use for example a certain gens are found in your PCR product you always use a marker or control to see if your PCR was succesful usely GADPH (household gen has to with glucose breaking down). But also when you want to test if amylase breask down starch you use one starch with amylase group and one without.
So groups you use when you have groups and controls when you compare single factors
Now control you use for example a certain gens are found in your PCR product you always use a marker or control to see if your PCR was succesful usely GADPH (household gen has to with glucose breaking down). But also when you want to test if amylase breask down starch you use one starch with amylase group and one without.
So groups you use when you have groups and controls when you compare single factors
Did anyone see the independent voter control group results from the debate last night?
I missed the debate on TV and listened to it on the car radio. Did anyone pay attention to who the independents thought won the debate last night?|||The control groups on different stations produced different results as you can imagine. For instance on Fox the control group was overwhelmingly in favor of Palin, like 80-20. On CNN it was 50-30-20 for Biden. So depending on your perspective is what your take on the winner and loser is. What I did find compelling was the democrats immediately went into attack mode using phrases, like hokey, scripted, tight, uninformed, and when pressed on her presence, they admitted that she was relaxed, prepared, and confident. Which means, they really know she won, but would never admit to it.|||I did. You didn't miss anything important, that's for sure.....just that once again the media caters to idiots with a 56 IQ instead of to the general population. I wonder when the media will recognize that most Americans aren't stupid?
The sample size of the "independant", undecided "group" of voters was, at most, 10-15 people in a single room. That right there makes any results they presented thereafter completely statistically invalid, even assuming that those 15 people were indeed "undecided".
Having 15 people attempt to represent the views of over 100,000,000 voters is bordering on insanity if not completely irrelevant. I'm surprised they even ran that whole sham of a line-graph thing on TV at all.
I know I can decide for myself who I thought did a better job in the debate without needing to see what 15 other people may have thought. You can too. Hopefully some day the media can figure that out.|||Only a few people out of that group have now committed to one side or the other. Others are still undecided. And during the debate, the ratings were interesting. Lots of people liked Biden from undecided voters but his ratings also dropped when he carried on a little about nothing. And as for Palin, her ratings dropped BIGTIME when she said how she鈥檇 answer the question HER way and not the way the moderator or Biden wanted her to. And she babbled about her experience as opposed to answering the question. Ratings went from about 75 (from where Biden had just finished) and dropped as low as 40.
I know this is just a little mini consensus through that undecided group. But I found it VERY interesting! They seemed to be fairly split and were still undecided for the most part.
But it did say that both candidates were well liked and because of their debating, their ratings went up for that. Both increased 50% give or take.
I actually found the debate to be done very well. It was better than the Presidential that we had last week. (My opinion)
|||If you go by any poll you're crazy. They're all skewed toward the way that particular outlet wants it to go. For all you know they throw out some results so it goes a particular way. Go with what you feel and know. Also, do your own research through multiple sources and records. Don't just go with the flow....|||I don't know who you are referring to, however the only national poll reported thus far of UNCOMMITTED voters, a scientific random sample not some hokey unscientific TV nonsense, found that 46% thought Joe Biden did better, 21% thought Palin did better and 33% thought it was a tie.|||CNN had that squiggly line thing broken down to MEN and WOMEN.
Funny but to me it proved that WOMEN were the more intelligent of the species.
Men only reacted to Sarah Palin. Anything she said made that "line rise". Maybe that dial was attached to their little soldier.|||Depends on the station you watched.
The independants that Fox had on were about 75% for McCain after the debate.
The ones on CNN were 49% for McCain afterwards.
The Ones on MSNBC we 5% for McCain afterwards.|||nearly everyone thought Biden won the debate but Palin did well (beat expectations)
I watched ABC, NBC, and PBS. People on NPR this morning are also saying Biden won.|||All independent polls have shown Biden winning.
Also note of interest: the fox news poll which was put out to the country as a whole i think, not only independents, showed Biden winning|||Independents overwhelmingly thought Palin won it.|||The 3 white women supported and talk up Palin. The 1 black woman didn't. At least that is how it was on the Today show.|||I think they both did good. but Palin showed that she can handle VP and that she is NOT dumb!!|||Yes. They overwhelmingly thought Palin won.
The sample size of the "independant", undecided "group" of voters was, at most, 10-15 people in a single room. That right there makes any results they presented thereafter completely statistically invalid, even assuming that those 15 people were indeed "undecided".
Having 15 people attempt to represent the views of over 100,000,000 voters is bordering on insanity if not completely irrelevant. I'm surprised they even ran that whole sham of a line-graph thing on TV at all.
I know I can decide for myself who I thought did a better job in the debate without needing to see what 15 other people may have thought. You can too. Hopefully some day the media can figure that out.|||Only a few people out of that group have now committed to one side or the other. Others are still undecided. And during the debate, the ratings were interesting. Lots of people liked Biden from undecided voters but his ratings also dropped when he carried on a little about nothing. And as for Palin, her ratings dropped BIGTIME when she said how she鈥檇 answer the question HER way and not the way the moderator or Biden wanted her to. And she babbled about her experience as opposed to answering the question. Ratings went from about 75 (from where Biden had just finished) and dropped as low as 40.
I know this is just a little mini consensus through that undecided group. But I found it VERY interesting! They seemed to be fairly split and were still undecided for the most part.
But it did say that both candidates were well liked and because of their debating, their ratings went up for that. Both increased 50% give or take.
I actually found the debate to be done very well. It was better than the Presidential that we had last week. (My opinion)
|||If you go by any poll you're crazy. They're all skewed toward the way that particular outlet wants it to go. For all you know they throw out some results so it goes a particular way. Go with what you feel and know. Also, do your own research through multiple sources and records. Don't just go with the flow....|||I don't know who you are referring to, however the only national poll reported thus far of UNCOMMITTED voters, a scientific random sample not some hokey unscientific TV nonsense, found that 46% thought Joe Biden did better, 21% thought Palin did better and 33% thought it was a tie.|||CNN had that squiggly line thing broken down to MEN and WOMEN.
Funny but to me it proved that WOMEN were the more intelligent of the species.
Men only reacted to Sarah Palin. Anything she said made that "line rise". Maybe that dial was attached to their little soldier.|||Depends on the station you watched.
The independants that Fox had on were about 75% for McCain after the debate.
The ones on CNN were 49% for McCain afterwards.
The Ones on MSNBC we 5% for McCain afterwards.|||nearly everyone thought Biden won the debate but Palin did well (beat expectations)
I watched ABC, NBC, and PBS. People on NPR this morning are also saying Biden won.|||All independent polls have shown Biden winning.
Also note of interest: the fox news poll which was put out to the country as a whole i think, not only independents, showed Biden winning|||Independents overwhelmingly thought Palin won it.|||The 3 white women supported and talk up Palin. The 1 black woman didn't. At least that is how it was on the Today show.|||I think they both did good. but Palin showed that she can handle VP and that she is NOT dumb!!|||Yes. They overwhelmingly thought Palin won.
What is the dependant variable,independat variable and the control group?
bart beleives that mice exposed to radiowaves will become extra srong. he decides to perform this experiment by placing 10 mice that had not been exposed. his test consisted of a heavy block of wood that blocked the mouse food. he found that 8 out of 10 mice could move the block. 7 out of 10 of the other mice couldnt.|||An independent variable is a factor that is manipulated in an experiment. The experimenter controls whether or not subjects are exposed to the independent variable. The dependent variable is measured to determine if the manipulation of the independent variable had any effect. For example, to test a hypothesis that eating carrots improves vision, the experimenter would manipulate whether or not subjects ate carrots. Thus, eating carrots is the independent variable. Each subject鈥檚 vision would be tested to see if carrot eating had any effect. Thus, vision is the dependent variable. The subjects assigned to eat carrots are in the experimental group, whereas subjects not eating carrots are in the control group.
What is the independent variable, dependent variable, constant and control group?
Pea plant clones are giving different amounts of water for a three-week period. The first pea plant receives 400 milliliters a day. The second pea plant receives 200 milliliters a day. The third pea plant receives 100 milliliters a day. The fourth pea plant does not receive any extra water; the plant only receives natural ways of receiving water. The heights of the pea plants are recorded daily.
Please Help!! Thank you so much (:|||The independent variable, that the experimenter has direct control over, is the amount of water the plants are given. The dependent varialble, which is influenced by/the result of the independent variable, is plant height. The control group is the group that you are not altering at all, the plants that receive water via natural means.|||Independent = the things you change to the group (so amount of water)
Dependent = the result
Constant = the group that continues to receive something.
Control = the group you're using to compare your experiment's result with.
Please Help!! Thank you so much (:|||The independent variable, that the experimenter has direct control over, is the amount of water the plants are given. The dependent varialble, which is influenced by/the result of the independent variable, is plant height. The control group is the group that you are not altering at all, the plants that receive water via natural means.|||Independent = the things you change to the group (so amount of water)
Dependent = the result
Constant = the group that continues to receive something.
Control = the group you're using to compare your experiment's result with.
Can someone please give me a simple biology experiment that contains a control group and experimental group?
it needs to be a interesting unique one that is also simple.thanks so much!|||Seed germination in light and dark( long thin white) is too simple? If not try lettuce seeds, they germinate easily.
Maybe cover germinating seeds with different foils or different coloured glasses?? Non unique I`m afraid.
How many seconds must one microwave bread to prevent mould? ( wet, closed container)
I will think further|||A scientific control augments integrity in experiments by isolating variables as dictated by the scientific method in order to make a conclusion about such variables. In a controlled experiment, two virtually identical experiments are conducted. In one of them, the treatment, the factor being tested is applied. In the other, the control, the factor being tested is not applied. Effects of the treatment are isolated by comparing outcomes in the two cases.
For example, in testing a drug, it is important to carefully verify that the supposed effects of the drug are produced only by the drug itself. Doctors achieve this with a double-blind study in a clinical trial: two (statistically) identical groups of patients are compared, one of which receives the drug and one of which receives a placebo. Neither the patients nor the doctor know which group receives the real drug, which serves both to curb researchers' bias and to isolate the effects of the drug.
Types of control group:
Negative control
A control sample where a negative result is expected, to help correlate a positive result with the variable being tested. Example: a measurement of background radiation when trying to test the effects of a certain substance on local radiation levels.
Positive control
A control sample that is known to produce a positive result if the test is working as expected. Example: printing a test page on a printer with its own driver software to test that it has been installed correctly, before testing the printing behaviour of another piece of software.
In the scientific method, an experiment is a set of observations performed in the context of solving a particular problem or question, to support or falsify a hypothesis or research concerning phenomena. The experiment is a cornerstone in the empirical approach to acquiring deeper knowledge about the physical world.
A control group study uses a control group to compare to an experimental group in a test of a causal hypothesis. The control and experimental groups must be identical in all relevant ways except for the introduction of a suspected causal agent into the experimental group. If the suspected causal agent is actually a causal factor of some event, then logic dictates that that event should manifest itself more significantly in the experimental than in the control group. For example, if 'C' causes 'E', when we introduce 'C' into the experimental group but not into the control group, we should find 'E' occurring in the experimental group at a significantly greater rate than in the control group. Significance is measured by relation to chance: if an event is not likely due to chance, then its occurrence is significant.
Maybe cover germinating seeds with different foils or different coloured glasses?? Non unique I`m afraid.
How many seconds must one microwave bread to prevent mould? ( wet, closed container)
I will think further|||A scientific control augments integrity in experiments by isolating variables as dictated by the scientific method in order to make a conclusion about such variables. In a controlled experiment, two virtually identical experiments are conducted. In one of them, the treatment, the factor being tested is applied. In the other, the control, the factor being tested is not applied. Effects of the treatment are isolated by comparing outcomes in the two cases.
For example, in testing a drug, it is important to carefully verify that the supposed effects of the drug are produced only by the drug itself. Doctors achieve this with a double-blind study in a clinical trial: two (statistically) identical groups of patients are compared, one of which receives the drug and one of which receives a placebo. Neither the patients nor the doctor know which group receives the real drug, which serves both to curb researchers' bias and to isolate the effects of the drug.
Types of control group:
Negative control
A control sample where a negative result is expected, to help correlate a positive result with the variable being tested. Example: a measurement of background radiation when trying to test the effects of a certain substance on local radiation levels.
Positive control
A control sample that is known to produce a positive result if the test is working as expected. Example: printing a test page on a printer with its own driver software to test that it has been installed correctly, before testing the printing behaviour of another piece of software.
In the scientific method, an experiment is a set of observations performed in the context of solving a particular problem or question, to support or falsify a hypothesis or research concerning phenomena. The experiment is a cornerstone in the empirical approach to acquiring deeper knowledge about the physical world.
A control group study uses a control group to compare to an experimental group in a test of a causal hypothesis. The control and experimental groups must be identical in all relevant ways except for the introduction of a suspected causal agent into the experimental group. If the suspected causal agent is actually a causal factor of some event, then logic dictates that that event should manifest itself more significantly in the experimental than in the control group. For example, if 'C' causes 'E', when we introduce 'C' into the experimental group but not into the control group, we should find 'E' occurring in the experimental group at a significantly greater rate than in the control group. Significance is measured by relation to chance: if an event is not likely due to chance, then its occurrence is significant.
How do you find the control group in this science experiment?
Dr. Palese placed eight guinea pigs in a temperature-controlled chamber, one of which was infected and the others were not. The number of guinea pigs that became infected was used to measure the rate of transmission. By varying air temperature in the guinea pigs鈥?quarters, they discovered that transmission was excellent at 41 degrees. It declined as the temperature rose until, by 86 degrees, the virus was not transmitted at all.
The animals also released viruses nearly two days longer at 41 degrees than at a typical room temperature of 68 degrees.|||The way it is described, there is no control group.
Now if the doctor had put a few guinea pigs, none of which were infected (*) in a chamber, and cycled the temperature the same way, that would have been a control group.
(*) Actually, we would _assume_ that none were infected. The testing for that would never be 100% accurate.|||The first response is correct. In this design there is no separate control group. It is known as a within-subjects design, where you put the same subject (animal, human, whatever you're testing) into different situations in which you change only a particular controlled aspect between the environments.
The animals also released viruses nearly two days longer at 41 degrees than at a typical room temperature of 68 degrees.|||The way it is described, there is no control group.
Now if the doctor had put a few guinea pigs, none of which were infected (*) in a chamber, and cycled the temperature the same way, that would have been a control group.
(*) Actually, we would _assume_ that none were infected. The testing for that would never be 100% accurate.|||The first response is correct. In this design there is no separate control group. It is known as a within-subjects design, where you put the same subject (animal, human, whatever you're testing) into different situations in which you change only a particular controlled aspect between the environments.
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