The SAS System 1 Obs center loss 1 A 12.4 2 A 10.7 3 A 11.9 4 A 11.0 5 A 12.4 6 A 12.3 7 A 13.0 8 A 12.5 9 A 11.2 10 A 13.1 11 B 9.1 12 B 11.5 13 B 11.3 14 B 9.7 15 B 13.2 16 B 10.7 17 B 10.6 18 B 11.3 19 B 11.1 20 B 11.7 21 C 8.5 22 C 11.6 23 C 10.2 24 C 10.9 25 C 9.0 26 C 9.6 27 C 9.9 28 C 11.3 29 C 10.5 30 C 11.2 31 D 8.7 32 D 9.3 33 D 8.2 34 D 8.3 35 D 9.0 36 D 9.4 37 D 9.2 38 D 12.2 39 D 8.5 40 D 9.9 41 E 12.7 42 E 13.2 43 E 11.8 44 E 11.9 45 E 12.2 46 E 11.2 47 E 13.7 48 E 11.8 49 E 11.5 50 E 11.7 The SAS System 2 The ANOVA Procedure Class Level Information Class Levels Values center 5 A B C D E Number of Observations Read 50 Number of Observations Used 50 The SAS System 3 The ANOVA Procedure Dependent Variable: loss Amount of Weight Loss Sum of Source DF Squares Mean Square F Value Model 4 59.8792000 14.9698000 15.07 Error 45 44.7040000 0.9934222 Corrected Total 49 104.5832000 Source Pr > F Model <.0001 Error Corrected Total R-Square Coeff Var Root MSE loss Mean 0.572551 9.097350 0.996706 10.95600 Source DF Anova SS Mean Square F Value center 4 59.87920000 14.96980000 15.07 Source Pr > F center <.0001 The SAS System 4 The ANOVA Procedure Bonferroni (Dunn) t Tests for loss NOTE: This test controls the Type I experimentwise error rate, but it generally has a higher Type II error rate than REGWQ. Alpha 0.05 Error Degrees of Freedom 45 Error Mean Square 0.993422 Critical Value of t 2.95208 Minimum Significant Difference 1.3159 Means with the same letter are not significantly different. Bon Grouping Mean N center A 12.1700 10 E A A 12.0500 10 A A B A 11.0200 10 B B B C 10.2700 10 C C C 9.2700 10 D The SAS System 5 Obs loss dummy_a dummy_b dummy_c dummy_e 1 12.4 1 0 0 0 2 10.7 1 0 0 0 3 11.9 1 0 0 0 4 11.0 1 0 0 0 5 12.4 1 0 0 0 6 12.3 1 0 0 0 7 13.0 1 0 0 0 8 12.5 1 0 0 0 9 11.2 1 0 0 0 10 13.1 1 0 0 0 11 9.1 0 1 0 0 12 11.5 0 1 0 0 13 11.3 0 1 0 0 14 9.7 0 1 0 0 15 13.2 0 1 0 0 16 10.7 0 1 0 0 17 10.6 0 1 0 0 18 11.3 0 1 0 0 19 11.1 0 1 0 0 20 11.7 0 1 0 0 21 8.5 0 0 1 0 22 11.6 0 0 1 0 23 10.2 0 0 1 0 24 10.9 0 0 1 0 25 9.0 0 0 1 0 26 9.6 0 0 1 0 27 9.9 0 0 1 0 28 11.3 0 0 1 0 29 10.5 0 0 1 0 30 11.2 0 0 1 0 31 8.7 0 0 0 0 32 9.3 0 0 0 0 33 8.2 0 0 0 0 34 8.3 0 0 0 0 35 9.0 0 0 0 0 36 9.4 0 0 0 0 37 9.2 0 0 0 0 38 12.2 0 0 0 0 39 8.5 0 0 0 0 40 9.9 0 0 0 0 41 12.7 0 0 0 1 42 13.2 0 0 0 1 43 11.8 0 0 0 1 44 11.9 0 0 0 1 45 12.2 0 0 0 1 46 11.2 0 0 0 1 47 13.7 0 0 0 1 48 11.8 0 0 0 1 49 11.5 0 0 0 1 50 11.7 0 0 0 1 The SAS System 6 The REG Procedure Model: MODEL1 Dependent Variable: loss Amount of Weight Loss Number of Observations Read 50 Number of Observations Used 50 Analysis of Variance Sum of Mean Source DF Squares Square F Value Pr > F Model 4 59.87920 14.96980 15.07 <.0001 Error 45 44.70400 0.99342 Corrected Total 49 104.58320 Root MSE 0.99671 R-Square 0.5726 Dependent Mean 10.95600 Adj R-Sq 0.5346 Coeff Var 9.09735 Parameter Estimates Parameter Standard Variable Label DF Estimate Error Intercept Intercept 1 9.27000 0.31519 dummy_a Weight Loss Center A 1 2.78000 0.44574 dummy_b Weight Loss Center B 1 1.75000 0.44574 dummy_c Weight Loss Center C 1 1.00000 0.44574 dummy_e Weight Loss Center E 1 2.90000 0.44574 Parameter Estimates Variable Label DF t Value Pr > |t| Intercept Intercept 1 29.41 <.0001 dummy_a Weight Loss Center A 1 6.24 <.0001 dummy_b Weight Loss Center B 1 3.93 0.0003 dummy_c Weight Loss Center C 1 2.24 0.0298 dummy_e Weight Loss Center E 1 6.51 <.0001