4. Variances difference test . F-distribution: distribution of the variance ratios between two independent samples (s,2 / s22) coming from populations with equal variances (6,2 = 622). CANVAS Lecture 10 - Within- lecture quiz! If you are VH = 1; VL = 1 Properties of the F-distribution: a cute Ho who does not handle rejection well, VH = 2; VL = 1 . Group of curves according to degrees of would you prefer an evil VH = 5; VL = 2 freedom of both samples. researcher to use small VH = 10; VL = 1 VH = 100; V = 100 . Values are always positive. or large samples to test you? . Positively skewed. . The mean value of F ~ 1 . Becomes more symmetric as n, and n2 increase. By IkamusumeFan - Own work, CC BY-SA 4.0, https://commons. wikimedia.org/w/index.php?curid=34777108 0 1 2 3 4 5 S,2/ S,2