【正文】 Number of Means 2 3 Critical Range .3933 .4076 Means with the same letter are not significantly different. Duncan Grouping Mean N plant A 4 3 B 4 2 C 4 1 單因素隨機(jī)區(qū)組設(shè)計(jì)試驗(yàn)資料 的分析（教材【例 】） data anova6。 run。 model x=plant leaf(plant)。 proc anova。 cards。s Multiple Range Test for x NOTE: This test controls the Type I parisonwise error rate, not the experimentwise error rate. Alpha Error Degrees of Freedom 45 Error Mean Square Number of Means 2 3 4 5 Critical Range Means with the same letter are not significantly different. Duncan Grouping Mean N fert A 12 4 A A 12 3 B 12 1 C 12 2 The ANOVA Procedure Level of Level of x density fert N Mean Std Dev 1 1 4 1 2 4 1 3 4 1 4 4 1 5 4 2 1 4 2 2 4 2 3 4 2 4 4 2 5 4 3 1 4 3 2 4 3 3 4 3 4 4 3 5 4 次級樣本含量相等的二因素系統(tǒng)分組資料 的方差分析【例 】 data anova5。 運(yùn)行結(jié)果 The ANOVA Procedure Class Level Information Class Levels Values density 3 1 2 3 fert 5 1 2 3 4 5 Number of observations 60 The ANOVA Procedure Dependent Variable: x Sum of Source DF Squares Mean Square F Value Pr F Model 14 .0001 Error 45 Corrected Total 59 RSquare Coeff Var Root MSE x Mean Source DF Anova SS Mean Square F Value Pr F density 2 .0001 fert 4 .0001 density*fert 8 The ANOVA Procedure Duncan39。 means density*fert/lsd。 model x=density fert density*fert。 proc anova。 cards。s Multiple Range Test for x NOTE: This test controls the Type I parisonwise error rate, not the experimentwise error rate. Alpha Error Degrees of Freedom 10 Error Mean Square Number of Means 2 3 Critical Range Means with the same letter are not significantly different. Duncan Grouping Mean N method A 6 3 A B A 6 2 B B 6 1 兩因素交叉分組試驗(yàn)有重復(fù)觀測值資料 的方差分析（教材【例 】） data anova4。 運(yùn)行結(jié)果 The ANOVA Procedure Class Level Information Class Levels Values field 6 1 2 3 4 5 6 method 3 1 2 3 Number of observations 18 The ANOVA Procedure Dependent Variable: x Sum of Source DF Squares Mean Square F Value Pr F Model 7 Error 10 Corrected Total 17 RSquare Coeff Var Root MSE x Mean Source DF Anova SS Mean Square F Value Pr F field 5 method 2 The ANOVA Procedure Duncan39。 means field method/duncan。 class field method。 1 1 71 1 2 73 1 3 77 2 1 90 2 2 90 2 3 92 3 1 59 3 2 70 3 3 80 4 1 75 4 2 80 4 3 82 5 1 65 5 2 60 5 3 67 6 1 82 6 2 86 6 3 85 。 input field method x。 運(yùn)行結(jié)果 The GLM Procedure Clas