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Understanding a Published Study

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Based upon the attached article, please give me ideas to address these questions:

1. What statistical test was used in Nelson et al., (2010)?
2. Did the authors use the correct statistical test? In other words, what was their rationale for using this test (i.e., were the variables discrete or continuous and was the test appropriate for this type of data?)
3. What was the research question? How did the statistical test address and answer the research question?
4. How did the authors interpret the results of this study?

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Comments on a statistical test

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Based upon the attached article, please give me ideas to address these questions:
1. What statistical test was used in Nelson et al., (2010)?
2. Did the authors use the correct statistical test? In other words, what was their rationale for using this test (i.e., were the variables discrete or continuous and was the test appropriate for this type of data?)
3. What was the research question? How did the ...

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