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.