METHODS OF DATA ANALYSIS
PARAMETRIC AND NON PARAMETRIC TESTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A pre post study gave the following results:Pre-study-4, 4, 5, 4.6. Its corresponding Post study values are-3.5, 4.5, 4, 3.9. What is the sum of Positive ranks
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1.5
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7
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8
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8.5
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Explanation:
Detailed explanation-1: -If the mean more accurately represents the center of the distribution of your data, and your sample size is large enough, use a parametric test. If the median more accurately represents the center of the distribution of your data, use a nonparametric test even if you have a large sample size.
Detailed explanation-2: -Correct option: b. The test does not require assumptions about population means. In nonparametric tests, no assumption is made regarding the underlying distribution or population mean.
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