**Power Project and NQuery Advisor ® Tutor
Post-Evaluation
Form **

Analysis Reviewed

The following are some questions to assess your understanding of the statistical concept of power.

1. What do we mean by the power of a statistical test?

2. Which symbolic statement represents power? (Mark the correct response)

a

b

1-a

1- b

3. Name two factors that affect power and describe the effect they have on power.

4. In a research study, what problems might occur if the power level is too low?

5. In a research study, what problems might occur if the power level is too high?

6. Please provide a definition of effect size.