A Researcher Found Significant Differences in the Mean Running Speeds

question 76

Multiple Choice

A researcher found significant differences in the mean running speeds of sprinters wearing shoes made by Nike, Reebok, and Adidas using an analysis of variance. The η² calculated on the basis of group membership (based on which shoes were worn) equaled .16. The value of η² shows that

• A) the r value would be .4.
• B) 84% of the variability in running speed is attributed to shoe brand.
• C) 16% of the variability in running speed is attributed to shoe brand.
• D) most of the factors influencing running speed are contained in the brand of shoes worn by runners.