SPSS FOR BIOLOGISTS:MANN WHITNEY TEST AND KRUSKAL WALLIS TEST

Understanding the Importance of MANN WHITNEY and KRUSKAL WALLIS TEST

MANN-WHITNEY U TEST :

The Mann-Whitney U test is used to compare  the differences between two independent groups when the dependent variable is either continuous, but not normally distributed. 

KRUSKAL WALLIS TEST:

An extension of Mann Whitney U test  to allow the comparison of more than two independent groups is Kruskal Wallis Test.

• The Kruskal-Wallis H test is a non parametric test.
• It can be used to determine if there are statistically significant differences between two or more groups of an independent variable on a dependent variable.

HOW BOTH TESTS ARE HELPFUL FOR A BIOLOGIST?

In this video we have explained how to perform Mann-Whitney and Kruskal Tests and what are the differences between them? As in the previous video we perform Exact Fisher test in which we cannot use continuous values,both the tests are the alternative for that.We have the data of Cancer patients with some clinical features and to find out the association between these features Whitney-Mann and Kruskal Tests are being applied.

For more details watch this video

THANK YOU!!