This ASQ Six Sigma Yellow Belt Study Guide lists all key concepts (and links to learn more) for the ASQ Six Sigma Yellow Belt Certification.
Two Sample T tests are used to resolve hypothesis tests around comparing process means. The underlying chart makes use of the T distribution.
1 sample Wilcoxon Non Parametric Hypothesis Test is a rank-based test and it compares the standard value with a hypothesized median.
The 1 sample sign non parametric hypothesis test simply computes a significance test of a hypothesized median value for a single data set.
The Friedman non parametric hypothesis test is an alternative to the one-way ANOVA with repeated measures.