Mann Whitney U Test Critical Value Table. Your critical value is where the row and column intercept. You are doing a one sided directional test.
Alpha 001 two tailed alpha 005 two tailed alpha 01 two tailed. A p can be computed for u obt using the normal distribution approximation. Dashes indicate that the sample size is too small to reject the null hypothesis at the chosen α level.
For example you want to nd critical value corresponding to 0 01.
This is a simple mann whitney u test calculator that provides a detailed breakdown of ranks calculations data and so on. The mann whitney u test is a nonparametric test that allows two groups or conditions or treatments to be compared without making the assumption that values are normally distributed. The following tables provide the critical values of u for various values of alpha and the sizes of the two samples for the two tailed test. Your critical value is where the row and column intercept.
