II. Probability and Statistics for Reliability
A. Basic concepts
5. Non-parametric statistical methods (Apply)
Apply non-parametric statistical methods, including median, Kaplan-Meier, Mann-Whitney, etc., in various situations.
Non-parametric work with reliability or comparisons.
Additional References
The Wald Wolfowitz Run Test for Two Small Samples (article)
Moods Median Test (article)
Levene’s Test (article)
Contingency Coefficient (article)
Kaplan-Meier Reliability Estimator (article)
Quick Quiz
Fred,
I noticed that the rank calculation for the Mann-Whitney U Test in this video seems to calculate the rank differently than that shown in your article (for the same test) on the Accendo website. If I may ask, which of the two methods is correct? The difference seems to be whenever you are ranking a value immediately after a set of tied values.
Thanks,
Ray
Hi Ray, thanks for spotting this – the video is correct and I’ve updated
the article to correct the error in rank assignments. cheers, Fred