# HLT-362V Week 5 Workbook Exercises 23 and 24 + Bonus Question

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HLT-362V Week 5 Workbook Exercises 23 and 24 + Bonus Question

Applied Statistics for Health Care Professionals - Discovering Relationships and Building Models

Grand Canyon University

Complete Exercise 23 and 24 in Statistics for Health Care Research: A Practical Workbook.

In order to receive full credit on calculated answers, please show your work. (Use Word's equation editor, etc., and/or provides a short written description as to how you obtained the final result.)

Exercise 24 includes 10 questions and a Bonus question.

Answer all questions including the Bonus question. EX # 23 Questions

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?

EX#24 Questions

1. What is the r value listed for the relationship between variables 4 and 9?

2. Describe the correlation r =-0.32** using words. Is this a statistically significant correlation? Provide a rationale for your answer.

3. Calculate the percentage of variance explained for r =?0.53. Is this correlation clinically important? Provide a rationale for your answer

4. According to Table 2, r =?0.15 is listed as the correlation between which two items? Describe this relationship

5. Calculate the percentage of variance explained for r =0.15. Describe the clinical importance of this relationship.

6. Which two variables in Table 2 have the weakest correlation, or r value? Which relationship is the closest to this r value? Provide a rationale for your answer

7. Is the correlation between LOT-R Total scores and Avoidance-Distraction coping style statistically significant? Is this relationship relevant to practice? Provide rationales for your answers

8. Is the correlation between variables 9 and 4 significant? Is this correlation relevant to practice? Provide a rationale for your answer

9. Consider two values, r =0.08 and r =?–0.58. Describe them in relationship to each other. Describe the clinical importance of both r values

10. Examine the Pearson r values for LOT-R Total, which measured Optimism with the Task and Emotion Coping Styles. What do these results indicate? How might you use this information in your practice?

BONUS QUESTION

One of the study goals was to examine the relationship between optimism and psychopathology. Using the data in Table 2, formulate an opinion regarding the overall correlation between optimism and psychopathology. Provide a rationale for your answer.

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