The method of control wherein an extraneous variable is held constant is called blocking.
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Q14: Random assignment of volunteers should result in
Q15: By definition, a simple random sample of
Q16: Response bias can occur when responses are
Q17: Two factors are extraneous if their effects
Q18: If the subjects as well as the
Q20: Replicating in an experiment means that the
Q21: A friend of yours, who is not
Q22: The following paragraph describes an actual study.
Q23: Bias, the tendency for samples to differ
Q24: Suppose that two experiments were conducted to
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