1.What is the r value for the relationship between Hamstring strength index 60°/s and the Shuttle run test?
Is this r value significant? Provide a rationale for your answer.
2. Consider r = 1.00 and r = –1.00. Which r value is stronger? Provide a rationale for your answer.
3. Describe the direction of the relationship between the Hamstring strength index 60°/s and the Shuttle
run test.
4. Without using numbers, describe the relationship between the Hamstring strength index 120°/s and the
Triple hop index.
5. Which variable has the weakest relationship with the Quadriceps strength index 120°/s? Provide a rationale
for your answer.
6. Which of the following sets of variables has the strongest relationship?
a. Hamstring strength index 120°/s and the Hop index
b. Quadriceps strength index 60°/s and the Carioca test
c. Quadriceps strength index 120°/s and the Side step test
d. Quadriceps strength index 60°/s and the Triple hop index
7. In Table 5, two r values are reported as r = –0.498 and r = –0.528. Describe each r value in words, indicating
which would be more statistically significant, and provide a rationale for your answer.
8. The researchers stated that the study showed a positive, significant correlation between Quadriceps
strength indices and pre- and postoperative functional stability. Considering the data presented in the
Table 5, do you agree with their statement? Provide a rationale for your answer.
9. The researchers stated that no significant relationship could be described between Hamstring strength
indices 60°/s and functional stability. Given the data in Table 5, explain why not.
10. Consider the relationship reported for the Quadriceps strength index 120°/s and the Hop index
(r = 0.744**, p = 0.000). What do these r and p values indicate related to statistical significance and clinical
importance?
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