A scientist performs a controlled experiment. This means that 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) the experiment consisted of an experimental group and a control group that were compared. D) two experiments are conducted, one differing from the other by two or more variables. E) the experiment consisted of a control group that was carefully chosen to be the opposite of the treatment group which was chosen at random.
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Step 1: A controlled experiment involves keeping certain factors constant or controlled while changing others to observe the effects. Show more…
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A controlled experiment is one that a. proceeds slowly enough that a scientist can make careful records of the results. b. tests experimental and control groups in parallel. c. is repeated many times to make sure the results are accurate. d. keeps all variables constant.
A controlled experiment is one that (A) proceeds slowly enough that a scientist can make careful records of the results. (B) tests experimental and control groups in parallel. (C) is repeated many times to make sure the results are accurate. (D) keeps all variables constant.
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