Wilcoxon P Value Interpretation. If you have small samples the Wilcoxon test has little power. The difference between the medians is significantly different Reject H 0 If the p-value is less than or equal to the significance level the decision is to reject the null hypothesis.
We can conclude that the median weight of the mice before treatment is significantly different from the median weight after treatment with a p-value 0001953. In addition to a p-value we would like some estimated measure of how these distributions differ. Distribution for Native Americans is the same as that for Caucasians.
This is not the same as saying that the medians are the same.
You just have no compelling evidence that they differ. We will also show how to check. We can just say that we have not. Wilcoxon rank sum test data.
