Exercise 23
Deborah CumminEXEExercise RCI
SE 23 Questions to be Graded
1. What is the r value for the relationship between Hamstring strength index 60Åã/s and the Shuttle run test?
Is this r value signifi cant? 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 60Åã/s and the Shuttle run test.
4. Without using numbers, describe the relationship between the Hamstring strength index 120Åã/s and the
Triple hop index.
5. Which variable has the weakest relationship with the Quadriceps strength index 120Åã/s? Provide a rationale for your answer.
Name: ___________________________________________________ Class: ______________________
Date: _________________________________________________________________________________
172 EXERCISE 23 • Pearsons’s Product-Moment Correlation Coeffi cient
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 signifi cant, and provide a rationale for your answer.
8. The researchers stated that the study showed a positive, signifi cant 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 signifi cant relationship could be described between Hamstring strength indices 60Åã/s and functional stability. Given the data in Table 5, explain why not.
10. Consider the relationship reported for the Quadriceps
SE 23 Questions to be Graded
1. What is the r value for the relationship between Hamstring strength index 60Åã/s and the Shuttle run test?
Is this r value signifi cant? 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 60Åã/s and the Shuttle run test.
4. Without using numbers, describe the relationship between the Hamstring strength index 120Åã/s and the
Triple hop index.
5. Which variable has the weakest relationship with the Quadriceps strength index 120Åã/s? Provide a rationale for your answer.
Name: ___________________________________________________ Class: ______________________
Date: _________________________________________________________________________________
172 EXERCISE 23 • Pearsons’s Product-Moment Correlation Coeffi cient
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 signifi cant, and provide a rationale for your answer.
8. The researchers stated that the study showed a positive, signifi cant 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 signifi cant relationship could be described between Hamstring strength indices 60Åã/s and functional stability. Given the data in Table 5, explain why not.
10. Consider the relationship reported for the Quadriceps