NUTRITION
THE HUMAN BODY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is a controlled experiment?
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An experiment where one variable is changed.
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An experiment where two variables are changed.
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An experiment where ALL variables are controlled or kept constant
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An experiment where NO variables are controlled or kept constant
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Explanation:
Detailed explanation-1: -In experiments, researchers manipulate independent variables to test their effects on dependent variables. In a controlled experiment, all variables other than the independent variable are controlled or held constant so they don’t influence the dependent variable.
Detailed explanation-2: -A controlled experiment is simply an experiment in which all factors are held constant except for one: the independent variable.
Detailed explanation-3: -A controlled experiment is defined as an 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.
There is 1 question to complete.