For Biology, I am doing a review sheet for my final exams. What is a control or control group?|||When you set up an experiment, you have one group that you treat in a particular way (experimental group) and another that is identical but not treated (control). The treatment is the independent variable; what happens because of the treatment is the dependent variable.
For example, you test the effect of a chemical on the rate of mortality in daphnia. Daphnia in plain water are the control group; the ones in water with the chemical are the experimental groups. Concentration of the chemical is the independent variable. Death rate is the dependent variable.
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