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Unformatted text preview: Math/Stat 423/523 Chapter 10 Formulas Section 10.1 SingleFactor ANOVA (Equal Sample Sizes) I = total number of treatments J = common number of replications of each treatment i = mean of treatment i (for i = 1, 2, ..., I) X ij = random variable that represents the measurement from the j th EU under treatment i (for i = 1, ..., I and j = 1, ..., J) The OneWay Fixed Model : X ij = i + ij where i1 , i2 , ..., iJ are iid N(0, 2 ). Definition Sums of Squares Treatment i average : J x x J 1 j ij . i = = Grand Average : IJ x x I 1 i J 1 j ij .. = = = ( 29 = = = I 1 i J 1 j 2 .. ij x x SST ( 29 = = I 1 i 2 .. . i x x J SSTr Treatment i standard deviation = s i ( 29 = = = I 1 i J 1 j 2 . i ij x x SSE = = I 1 i 2 i s ) 1 J ( SSE I / s MSE I 1 i 2 i = = Alternative (Working) Formulas Let = = = = = J 1 j ij . i I 1 i J 1 j ij .. x x , x x , IJ x CF factor correction 2 .. = = . CF x SST I 1 i J 1 j 2 ij = = = CF J x SSTr I 1 i 2 . i = = SSE = SST SSTr Remarks: . i ij ij x x e = is called a residual and e ij estimates ij . SST = SSTr + SSE. SSE = SST SSTr ....
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 Spring '06
 Pascual
 Formulas, Replication

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