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. Which non parametric test is suitable here?
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Mann Whitney
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Kruskal Wallis
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Wilcoxon
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Paired T Test
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Explanation:
Detailed explanation-1: -The Mann-Whitney test is the non-parametric equivalent of the independent samples t-test (it is sometimes-wrongly-called a ‘non-parametric t-test’).
Detailed explanation-2: -Parametric statistics are based on assumptions about the distribution of population from which the sample was taken. Nonparametric statistics are not based on assumptions, that is, the data can be collected from a sample that does not follow a specific distribution.
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