More on ANOVA
Power of Within-Subjects Designs Demonstration
Answers
- High correlations can result in much higher power than lower correlations. They do this by lowering the mean square error.
- High variance increases the error term and lowers power.
- The more different the population means, the bigger the effect and the higher the power.
- Since the probability is caluclated in only one tail, a one-tailed test results in a lower probability value.