Mann Whitney U Test Critical Values. The critical value of u can be found in the table below. We do not reject h 0 because 3 2.
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. Obt is the lesser of the two calculated test statistics u 1 u 2. You need to compare the critical value with u min u1 u2 where u1 and u2 are as defined on the webpage mann whitney test.
So for example one might compare the speed at which two different groups of people can run 100 metres where one group has trained for six weeks and the other has not.
Mann whitney u test critical values for very large samples. Ask question asked 7 years 4 months ago. N 1 n 2 5 and our two sided level of significance α 0 05. In fact if the total sample size is seven or less the mann whitney test will always give a p value greater than 0 05 no matter how much the groups differ.
