Data Analysis Plan for Man-Whitney – statswork

Data Analysis Plan for Mann-Whitney Test

Your data is not distributed normally (positively or negatively skewed)? Your sample size is small (>5 and <20? looking for non-parametric equivalent of the unpaired t-test? You wanted to compare the central tendencies of two independent samples drawn from the population (eg. Hypertension versus non-hypertension patients), then Mann-Whitney U test would be the right choice.

Mann-Whitney SPSS Output

Reporting Mann-Whitney Test for your dissertation / Manuscript publications

“A Mann-Whitney test indicated that self-rated attractiveness was greater for women who were not using oral contraceptives (Mdn = 5) than for women who were using oral contraceptives (Mdn = 4), U = 67.5, p = .034, r = .38”

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