Duffy's Research Addresses the Relationships Among Amount of Practice Time

question 12

Multiple Choice

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

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