Input Data
Results
U Value:
-
P Value:
-
Data Source and Methodology
Calculations are based on the methods outlined in the scientific article from the Journal of Statistical Software. View Source.
The Formula Explained
The Mann-Whitney U test is calculated using the formula:
$$ U = n_1 \cdot n_2 + \frac{n_1(n_1+1)}{2} - R_1 $$
Glossary of Terms
- U Value: The test statistic for the Mann-Whitney U Test.
- P Value: The probability of observing the test results under the null hypothesis.
FAQ
What is the Mann-Whitney U Test?
A non-parametric test for comparing two independent samples.
When should I use it?
When your data does not meet the assumptions of a t-test.