Mann Whitney U Testi Spss. Tick mann whitney u under test type. How to perform a mann whitney u test in spss a mann whitney u test sometimes called the wilcoxon rank sum test is used to compare the differences between two samples when the sample distributions are not normally distributed and the sample sizes are small n 30.
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. Tick mann whitney u under test type. It is considered to be the nonparametric equivalent to the two sample t test.
How to perform a mann whitney u test in spss a mann whitney u test sometimes called the wilcoxon rank sum test is used to compare the differences between two samples when the sample distributions are not normally distributed and the sample sizes are small n 30.
Press continue and then click on ok to run the test. Press continue and then click on ok to run the test. 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. 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.
