A controlled experiment is the kind of experiment in which one condition (independent variable) affects another (dependant variable) by keeping all the conditions constant.
What is a controlled experiment?
A controlled experiment is the experiment in which all the variable factors in an experimental group and a comparison control group are kept the same except for one variable factor in the experimental group that is changed or altered.
The independent variable is the variable that is changed or altered in an experiment, while the dependent variable is the variable that is measured or recorded in the experiment.
Therefore, a controlled experiment is the kind of experiment in which one condition (independent variable) affects another (dependant variable) by keeping all the conditions constant.
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