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Appendix C: Flowcharts for Relating Research Questions to Statistical Methods

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Flowchart to UseResearch Questions
C-1Is there a difference in means or medians (ordinal or numerical measures)?
C-2Is there a difference in means or medians (ordinal or numerical measures, three or more groups)?
C-3Is there a difference in proportions (nominal measurs)?
C-4Is there an association?
C-5Is there a difference in measures of association?
C-6Are there two or more independent variables?

Figure C–1.
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Is there a difference in means or medians (ordinal or numerical measures)?

Figure C–2.
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Is there a difference in means or medians (ordinal or numerical measures, three or more groups)?

Figure C–3.
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Is there a difference in proportions (nominal measures)?

Figure C–4.
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Is there an association?

Figure C–5.
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Is there a difference in measures of association?

Figure C–6.
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Are there two or more independent variables?

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