A researcher conducts a study on the effectiveness of a physical activity program in motivating people to engage in physical activity on a long term basis.This researcher tests her participants physical activity levels at four time points: pretest,posttest,six month follow-up,and one year follow-up.Which of the following statistical tests would be most appropriate for the analysis of the data?
A)one-way repeated measures analysis of variance
B)two-way mixed model analysis of variance
C)correlated groups t test
D)independent groups t test

Question

Quizplus · Accepted Answer

A one-way repeated measures ANOVA is the most appropriate test for analyzing the data because it assesses the changes in physical activity levels across four time points within the same group of participants. The test can determine if there are significant differences in physical activity levels across time, which would indicate the effectiveness of the physical activity program in motivating people to engage in physical activity on a long term basis. The other tests listed are not appropriate because they do not take into account the repeated measures aspect of the study.

A Researcher Conducts a Study on the Effectiveness of a Physical