16: Non-parametric Tests
- Page ID
- 31856
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- 16.3: Median Sign Test
- The median sign test is a test of a null hypothesis about the median, MD, of a population based on the binomial distribution. To use the test, every subject is assigned a score of + , 0 or − depending on whether their data point value is greater than, the same as or less than the H0 median.
- 16.7: Kruskal-Wallis Test (H Test)
- The Kruskal-Wallis Test is a non-parametric one-way ANOVA. It detects differences in means between groups. The distribution behind the test is a new discrete distribution called the H distribution that assumes the group samples come from populations with identically shaped distributions.
- 16.8: Spearman Rank Correlation Coefficient
- This is a rank alternative to the Pearson correlation coefficient that may be used when the assumption of normality is not met for hypothesis testing.