Therefore, there must be different participants in each group with no participant being in more than one group.
![what is minitab express 18 what is minitab express 18](https://softwarestore.psu.edu/prodimages/8292-DEFAULT-m.jpg)
The Mann-Whitney U test has four "assumptions". However, before we introduce you to this procedure, you need to understand the different assumptions that your data must meet in order for a Mann-Whitney U test to give you a valid result.
#WHAT IS MINITAB EXPRESS 18 HOW TO#
In this guide, we show you how to carry out a Mann-Whitney U test using Minitab, as well as interpret and report the results from this test. Alternately, you could use a Mann-Whitney U test to determine whether there is a difference in typing speed based on room lighting (i.e., the dependent variable would be "typing speed" and the independent variable would be "room lighting", which has two groups: "red lighting" and "blue lighting"). The Mann-Whitney U test determines whether there is a statistically significant difference between two unrelated, independent groups on a dependent variable.įor example, you could use a Mann-Whitney U test to determine whether there is a difference in test anxiety between undergraduate and postgraduate students (i.e., the dependent variable would be "test anxiety", and the independent variable would be "educational level", which has two groups: "undergraduate students" and "postgraduate students"). Mann-Whitney U test using Minitab Introduction