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Without a control group, what would you compare your results to? How would you know if the treatments had any effect? Without a control group, there is no basis for knowing if a particular result is due to the variable being tested or to some other factor.

The control group gives a set where the expected outcome is known. So when a variable is changed and if the outcome is the same as the control group, then we know to try a different variable.

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14y ago

The control group doesn't get the drug, or the test, go through the procedure, or what ever it is you are studying. They are the "Zero" or "Baseline" that you compare all your test results to. Without a control group, you can't know if you get any results, good or bad

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Q: Why is a control group important in an experiment?
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Related questions

Why is is it important that an experiment include a control group?

a control group assures that an experiment will be repeatable


Why is it important to control an experiment?

The control experiment allows a standard of comparison for the experimental group


Why is control important in an experiment?

Every experiment requires a control group. This is so that the group that is manipulated can be compared to a group that has had nothing done to it., in order to measure changes.


Why is it important that every experiment have a control group?

so that it doesn't go out of control


What is a control group in a science experiment?

A control group is the unaffected group in a science experiment.


Why is a control group important to a controlled experiment?

Because without it, it wouldn't be organized.


What is the important part of an experiment that is not being tested and is used for comparison?

The control group


Why is a control group important to have in a experiment?

A control group is the standard of comparison between what happens with the experimental variable and without the experimental variable.


What is a control or control group?

the group that does not change in the experiment VIVI :)


What is the difference between a control group and a control?

A test group is the group in an experiment to which the change is being applied and the control group is the same type of group in an experiment to which nothing is done to compare the changes in the test group to.


What does a control group have to do with the independent variable?

the answer to that question is the control group has nothing to do with the independent variable because a control group is some thing in your experiment that has not changed through out your experiment. And a independent variable is some thing in your experiment that you change through your experiment(s)


What is the comparison group in a controlled experiment?

control group