Social Studies, 17.02.2020 21:35, ccameron1
A controlled experiment is one in which A. there are at least two groups, one of which does not receive the experimental treatment. B. the experiment is repeated many times to ensure that the results are accurate. C. there are at least two groups, one differing from the other by two or more variables. D. there is one group for which the scientist controls all variables.
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A controlled experiment is one in which A. there are at least two groups, one of which does not rece...
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