Question

Duffy's research addresses the relationships among amount of practice time, race times, and motivation for running in high school athletes. He measures motivation for running by a Likert scale.
Given Duffy's research, which one of the following correlation coefficients should he use to analyze his data?
a. Kendall's tau
b. Spearman's rho
c. Pearson r
d. Phi coefficient

Answer

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