Mann Whitney U Testi Spss. Press continue and then click on ok to run the test. The independent variable has only two levels.
Click on define groups and input the values that define each of the groups that make up the grouping variable i e the coded value for group 1 and the coded value for group 2. It is considered to be the nonparametric equivalent to the two sample t test. If you have been following this guide from page one you will know that the following output and interpretation relates to the mann whitney u test results when your two distributions have a different shape such that you are comparing mean ranks rather than medians this is what happens when your data has violated assumption 4 of the mann whitney u test.
Press continue and then click on ok to run the test.
If you have been following this guide from page one you will know that the following output and interpretation relates to the mann whitney u test results when your two distributions have a different shape such that you are comparing mean ranks rather than medians this is what happens when your data has violated assumption 4 of the mann whitney u test. The reason you would perform a mann whitney u test over an independent t test is when the data is not normally distributed. The mann whitney u test is a non parametric test that is useful for determining if the mean of two groups are different from each other. Tick mann whitney u under test type.
