Download presentation
Presentation is loading. Please wait.
1
Tuesday, November 12 Analysis of Variance
2
Tuesday, November 12 The Analysis of Variance
3
Tuesday, November 12 The Analysis of Variance ANOVA
8
F = Between-group variance estimate within-group variance estimate SS T = (X - X) 2 SS B = N G (X G - X) 2 SS W = (X 1 - X 1 ) 2 + (X 2 - X 2 ) 2 + (X k - X k ) 2 SS T = SS B + SS W _ __ _ _ _
9
F = Between-group variance estimate within-group variance estimate MS B = SS B / df B MS W = SS W / df W where df B = k-1 (k = number of groups) df W = N - k
10
Protected t-test t = X i - X j MS W ( 1/N i + 1/N j ) __ Where df = N - k
11
= df B (F - 1) df B F + df W Epison bears the same relationship to F that r pb bears to t.
Similar presentations
