When doing an experiment, it is best to have two groups a "control group" and the "test group". The test group is the group tested on while nothing is done to the control group. This provides a means of determining what, if anything, the effext of the test are.
A control group is the group that is not being manipulated by the experiment.
Often there is an effect of an expectation, so the control group is given a placebo which is similar to the experimental procedure (or drug), but doesn't manipulate the same variables.
For ethical reasons, with medical treatment in humans, the "placebo" or control group may receive what is considered the "standard care" of the time which may actually include active drugs or other treatments.
The best studies are "double blind" where the person administering the drug, or conducting the experiment is unaware of which subjects are receiving the placebo treatment. They just record the experimental parameters which are evaluated by the researcher.
Historical , observational, and cohort studies are a little more difficult as there are often many related variables and it is difficult to isolate a single variable of interest.
For example, if you are doing an observational study of the health effects of hanging out at bars, you might have to carefully control the age of the population as well as the marital status, employment, socio-economic status, exercise, nutrition, and a number of other factors.
Answer: Experimental group
BY LECHO648
The control group.
control group
The control group in an experiment is the group that nothing is done to. The reason why there is a control group in experiments is to compare it with the group that has been tested.
A control group is the unaffected group in a science experiment.
A control refers to the "control group" in a scientific experiment. The control group is compared to the experimental group. For example, pretend you are experimenting to see if a drug works. Group A (The experimental group) is given the real drug, and Group B (The control group) is given a fake drug (placebo) to compare results.
A control group is never changed.
Control Group
The control group in an experiment is the group that nothing is done to. The reason why there is a control group in experiments is to compare it with the group that has been tested.
You use a control group to compare the results of the experimental group to. The control group has the "normal" results. After the experiment, you can tell if and what has changed from the control groups results
the group that does not change in the experiment VIVI :)
The control group is used for exprimenting
You need a control group to compare your experimental group to something.
A control group is the unaffected group in a science experiment.
He needed a control group. *Apex*
A control refers to the "control group" in a scientific experiment. The control group is compared to the experimental group. For example, pretend you are experimenting to see if a drug works. Group A (The experimental group) is given the real drug, and Group B (The control group) is given a fake drug (placebo) to compare results.
the control group is the group or subject that is not affected by what you are testing for.
control group
A control group is nothing changed about it
the control group is recieving the medication