Description
Complete Exercise 10 in Statistics for Nursing Research: A Workbook for Evidence-Based Practice, and submit as directed by the instructor.
Use MS Word to complete “Questions to be Graded: Exercise 26” in Statistics for Nursing Research: A Workbook for Evidence-Based Practice. Submit your work in SPSS by copying the output and pasting into the Word document. In addition to the SPSS output, please include explanations of the results where appropriate.
Questions to Be Graded
EXERCISE
10
Name:
Class:
Date:
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 “Questions to Be Graded.“
1. What demographic variables were measured at the nominal level of measurement in the Oh et al.
(2014) study? Provide a rationale for your answer.
2. What statistics were calculated to describe body mass index (BMI) in this study? Were these
appropriate? Provide a rationale for your answer.
3. Were the distributions of scores for BMI similar for the intervention and control groups? Provide
a rationale for your answer.
4. Was there a significant difference in BMI between the intervention and control groups? Provide
a rationale for your answer,
Copyright © 2017, Elsevier Inc. All rights reserved.
105
106
EXERCISE 10
Description of a Study Sample
5. Based on the sample size of N=41, what frequency and percentage of the sample smoked? What
frequency and percentage of the sample were non-drinkers (alcohol)? Show your calculations
and round to the nearest whole percent.
6. What measurement method was used to measure the bone mineral density (BMD) for the study
participants? Discuss the quality of this measurement method and document your response.
7. What statistic was calculated to determine differences between the intervention and control
groups for the lumbar and femur neck BMDs? Were the groups significantly different for BMDs?
8. The researchers stated that there were no significant differences in the baseline characteristics
of the intervention and control groups (see Table 2). Are these groups heterogeneous or homo-
geneous at the beginning of the study? Why is this important in testing the effectiveness of the
therapeutic lifestyle modification (TLM) program?
9. Oh et al. (2014, p. 296) stated that “the adherence rate to the TLM program was 99.6%.” Discuss
the importance of intervention adherence, and document your response.
10. Was the sample for this study adequately described Provide a rationale for your answer.
Courche 2017 iar in all richtered
Questions to Be Graded
EXERCISE
26
Name:
Class:
Date:
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 “Questions to Be Graded.”
1. Plot the frequency distribution for “Age at Enrollment” by hand or by using SPSS.
2. How would you characterize the skewness of the distribution in Question l-positively skewed,
negatively skewed, or approximately normal? Provide a rationale for your answer.
3. Compare the original skewness statistic and Shapiro-Wilk statistic with those of the smaller
dataset (n = 15) for the variable “Age at First Arrest.” How did the statistics change, and how
would you explain these differences?
4. Plot the frequency distribution for “Years of Education” by hand or by using SPSS.
Copyright © 2017, Elsevier Inc. All rights reserved.
289
290
EXERCISE 26
Determining the Normality of a Distribution
5. How would you characterize the kurtosis of the distribution in Question 4-leptokurtic, mesokur-
tic, or platykurtic? Provide a rationale for your answer.
6. What is the skewness statistic for “Age at Enrollment”? How would you characterize the mag-
nitude of the skewness statistic for “Age at Enrollment”?
7. What is the kurtosis statistic for “Years of Education”? How would you characterize the magni-
tude of the kurtosis statistic for “Years of Education”?
8. Using SPSS, compute the Shapiro-Wilk statistic for “Number of Times Fired from Job.” What
would you conclude from the results?
9. In the SPSS output table titled “Tests of Normality,” the Shapiro-Wilk statistic is reported along
with the Kolmogorov-Smirnov statistic. Why is the Kolmogorov-Smirnov statistic inappropriate
to report for these example data?
10. How would you explain the skewness statistic for a particular frequency distribution being low
and the Shapiro-Wilk statistic still being significant at p
Purchase answer to see full
attachment
EXERCISE
10
Name:
Class:
Date:
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 “Questions to Be Graded.“
1. What demographic variables were measured at the nominal level of measurement in the Oh et al.
(2014) study? Provide a rationale for your answer.
2. What statistics were calculated to describe body mass index (BMI) in this study? Were these
appropriate? Provide a rationale for your answer.
3. Were the distributions of scores for BMI similar for the intervention and control groups? Provide
a rationale for your answer.
4. Was there a significant difference in BMI between the intervention and control groups? Provide
a rationale for your answer,
Copyright © 2017, Elsevier Inc. All rights reserved.
105
106
EXERCISE 10
Description of a Study Sample
5. Based on the sample size of N=41, what frequency and percentage of the sample smoked? What
frequency and percentage of the sample were non-drinkers (alcohol)? Show your calculations
and round to the nearest whole percent.
6. What measurement method was used to measure the bone mineral density (BMD) for the study
participants? Discuss the quality of this measurement method and document your response.
7. What statistic was calculated to determine differences between the intervention and control
groups for the lumbar and femur neck BMDs? Were the groups significantly different for BMDs?
8. The researchers stated that there were no significant differences in the baseline characteristics
of the intervention and control groups (see Table 2). Are these groups heterogeneous or homo-
geneous at the beginning of the study? Why is this important in testing the effectiveness of the
therapeutic lifestyle modification (TLM) program?
9. Oh et al. (2014, p. 296) stated that “the adherence rate to the TLM program was 99.6%.” Discuss
the importance of intervention adherence, and document your response.
10. Was the sample for this study adequately described Provide a rationale for your answer.
Courche 2017 iar in all richtered
Questions to Be Graded
EXERCISE
26
Name:
Class:
Date:
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 “Questions to Be Graded.”
1. Plot the frequency distribution for “Age at Enrollment” by hand or by using SPSS.
2. How would you characterize the skewness of the distribution in Question l-positively skewed,
negatively skewed, or approximately normal? Provide a rationale for your answer.
3. Compare the original skewness statistic and Shapiro-Wilk statistic with those of the smaller
dataset (n = 15) for the variable “Age at First Arrest.” How did the statistics change, and how
would you explain these differences?
4. Plot the frequency distribution for “Years of Education” by hand or by using SPSS.
Copyright © 2017, Elsevier Inc. All rights reserved.
289
290
EXERCISE 26
Determining the Normality of a Distribution
5. How would you characterize the kurtosis of the distribution in Question 4-leptokurtic, mesokur-
tic, or platykurtic? Provide a rationale for your answer.
6. What is the skewness statistic for “Age at Enrollment”? How would you characterize the mag-
nitude of the skewness statistic for “Age at Enrollment”?
7. What is the kurtosis statistic for “Years of Education”? How would you characterize the magni-
tude of the kurtosis statistic for “Years of Education”?
8. Using SPSS, compute the Shapiro-Wilk statistic for “Number of Times Fired from Job.” What
would you conclude from the results?
9. In the SPSS output table titled “Tests of Normality,” the Shapiro-Wilk statistic is reported along
with the Kolmogorov-Smirnov statistic. Why is the Kolmogorov-Smirnov statistic inappropriate
to report for these example data?
10. How would you explain the skewness statistic for a particular frequency distribution being low
and the Shapiro-Wilk statistic still being significant at p
Purchase answer to see full
attachment
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