Katika takwimu, Jaribio U la Mann-Whitney (kwa Kiingereza: Mann–Whitney U test; linaitwa pia: Mann–Whitney–Wilcoxon (MWW), Wilcoxon rank-sum test, au Wilcoxon–Mann–Whitney test) ni jaribio la takwimu ambalo linaweza kujaribu upweke baina ya kati mbili. Linapatwa kwa hesabu kama Jaribio U. Ili utafute Jaribio U la Mann-Whitney kwa lugha ya programu ya takwimu R uandike: > wilcox.test(y ~ A, data=SampuliYangu) #y ni kibadilika na A ni vikundi Saleh, A. M. E., & Ehsanes, M. (2001). An introduction to probability and statistics. Wiley. Peck, R., Olsen, C., & Devore, J. L. (2015). Introduction to statistics and data analysis. Cengage Learning.