Friedman’s test [Maurice H. Friedman, American physiologist, 1903-1991] , 1. (Obsolete) a early method of testing for pregnancy in which a sample of urine from a woman was injected into a mature unmated female rabbit, also called the rabbit test. If the woman was pregnant, the rabbit’s ovaries would change in response to the presence of human chorionic gonadotropin. Modern pregnancy tests are still based on the presence of human chorionic gonadotropin, but a live animal is no longer required. 2. (in statistics) a nonparametric alternative to the one-way analysis of variance (ANOVA), with repeated measures used to test for differences between groups when the dependent variable is ordinal.
