One Way to Increase the Power of a Planned Study

question 11

Multiple Choice

One way to increase the power of a planned study by altering the amount of variance within each of the two distributions is to:

• A)use the variance of the experimental group instead of the variance from the comparison distribution
• B)plan to exclude any scores in the sample that are not outliers
• C)use more precise measures
• D)reduce the number of items on any questionnaires employed

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