An experiment must have at least two different levels for the independent variable.

Name: An experiment must have at least two different levels for the independent variable.
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Question

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An independent variable must have at least two different levels or conditions (i.e. two different values or settings) to be able to compare the effects of different levels on the dependent variable. Without varying the independent variable, there would be nothing to compare or measure.

An Experiment Must Have at Least Two Different Levels for the Independent