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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In testing for the difference between two populations, it is possible to use
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Mann Whitney
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Kruskal Wallis
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Wilcoxon
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None of the above
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Explanation:
Detailed explanation-1: -The Mann Whitney U test, sometimes called the Mann Whitney Wilcoxon Test or the Wilcoxon Rank Sum Test, is used to test whether two samples are likely to derive from the same population (i.e., that the two populations have the same shape).
Detailed explanation-2: -A Mann-Whitney U Test can only be used to compare two groups on your variable of interest. If you have three or more groups, you should use a One Way Anova analysis if your variable of interest is normally distributed or a Kruskal-Wallis One-Way ANOVA if your variable of interest is skewed.
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