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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The distribution of the differences between the two related groups needs to be symmetrical in shape.
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -The key difference between both of them is that in paired t-test you compare the paired measures that match deliberately. Whereas in unpaired t-test you compare the means of two samples that have no natural pairing.
Detailed explanation-2: -Conclusion. The Wilcoxon rank sum test is a non-parametric statistical hypothesis test used to compare two samples. It does not require the assumption of normality, and so it is appropriate for use with small sample sizes.
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