Discuss sample size estimation

Statistical Assessment of Two Research Reports

  • Examine two research articles which incorporate a statistical analysis discussed in this course but not previously examined in your submission of activity 1 or 2.


  • Briefly summarize and report on each statistic and discuss whether the assumptions of each test were met and if the type of data was appropriate for each statistical test.
  • Include the following sections in your paper:

Section I – A Review of the Data Analysis:

Provide a discussion of the following elements:

  • What is the problem or question(s) this research concerns?


  • Give a brief overview of how the data were collected.
  • What is the source of data? (i.e., questionnaire, physiological data, existing statistical information, etc.). In some studies there are two or more sources of data.
  • List the independent and dependent variables
  • Discuss sample size estimation. Consider the following
  • Was a power analysis conducted?
  • Was the sample size appropriate for the statistical test? Why or why not?
  • Describe the statistic used to measure the hypotheses/research questions.
  • How is this appropriate?
  • How were assumptions met?
  • Is the level of measurement appropriate? Why or why not?
  • Discuss how the data were displayed (i.e., graphs, tables)
  • Were these appropriate? Why or why not?

Section II – Data Analysis Evaluation:

  • What did the data analysis show?
  • What conclusions were drawn by the authors?
  • DO you agree or disagree with the conclusions? Why or why not?
  • Were the study limitations discussed? What were the limitations if any? How did the authors deal with the limitations?
  • Give your overall evaluations of the methods used in this article, including a discussion of the following questions:
  • What things were done well?
  • What were done poorly?
  • How much trust do you put in the findings?

Section III – Understanding the Data:

  • Provide a discussion of the usefulness of each study to your nursing peers.
  • What might they think of the study?
  • What might they find confusing?
  • What aspects of the studies might they question?
  • Summarize why you think the studies do or do not provide sufficient evidence to change practice
  • Summarize your thoughts related to the usefulness of the statistics.

Your paper must be:

  • 4-12 pages, excluding cover page;
  • composed using Microsoft Word;
  • typed in Times New Roman, font size 12.

This and all papers should be written in APA format and follow standard rules of grammar and formatting.

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