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health status

Copyright © 2017, Elsevier Inc. All rights reserved. 305 Questions to Be Graded

 

EXERCISE 27 Follow your instructor ’ s directions to submit your answers to the following questions for grading. Your instructor may ask you to write your answers below and submit them as a hard copy for grading. Alternatively, your instructor may ask you to use the space below for notes and submit your answers online at http://evolve.elsevier.com/Grove/statistics/ under “

 

 

Name: _______________________________________________________

Class: _____________________

Date:_____________________

 

 

 

Questions to Be Graded.”

 

1. What is the mean age of the sample data?

 

2. What percentage of patients never used tobacco?

 

3. What is the standard deviation for age?

 

4. Are there outliers among the values of age? Provide a rationale for your answer.

 

5. What is the range of age values?

 

6. What percentage of patients were taking infl iximab?

 

7. What percentage of patients had rheumatoid arthritis as their primary diagnosis?

 

8. What percentage of patients had irritable bowel syndrome as their primary diagnosis?

 

9. What is the 95% CI for age?

 

10. What percentage of patients had psoriatic arthritis as their primary diagnosis?

 

 

 

 

 

 

 

Copyright © 2017, Elsevier Inc. All rights reserved. 307 Calculating Pearson Product-Moment Correlation Coeffi cient Correlational analyses identify associations between two variables. There are many differ-ent kinds of statistics that yield a measure of correlation. All of these statistics address a research question or hypothesis that involves an association or relationship. Examples of research questions that are answered with correlation statistics are, “Is there an associa-tion between weight loss and depression?” and “Is there a relationship between patient satisfaction and health status?”

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