An experiment is typically carried out by manipulating a variable, called the independent variable, affecting the experimental group. The effect that the researcher is interested in, the dependent variable(s), is measured.
A controlled experiment often compares the results obtained from experimental samples against control samples, which are practically identical to the experimental sample except for the one aspect whose effect is being tested (the independent variable). A good example would be a drug trial.
The group in an experiment that is exposed to the I. V. Example if i was to test which Guinea Pigs could get to a exit faster? Ones with lights on or ones without lights. Ones with lights on are the experimental group. The ones without are the control group
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