Which of the Following Describes a Controlled Experiment

question 29

Multiple Choice

Which of the following describes a controlled experiment?

• A)The experiment is repeated many times to ensure that the results are accurate.
• B)The experiment proceeds at a slow pace to guarantee that the scientist can carefully observe all reactions and process all experimental data.
• C)There are at least two groups, one of which does not receive the experimental treatment.
• D)There are at least two groups, one differing from the other by two or more variables.
• E)There is one group for which the scientist controls all variables.

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Definitions:

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Research Project

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