The SAS System 1 13:20 Thursday, February 17, 2011 The GLM Procedure Class Level Information Class Levels Values brand 2 1 2 form 3 1 2 3 Number of Observations Read 24 Number of Observations Used 24 The SAS System 2 13:20 Thursday, February 17, 2011 The GLM Procedure Dependent Variable: clrchng Sum of Source DF Squares Mean Square F Value Pr > F Model 5 1728.750738 345.750148 62.48 <.0001 Error 18 99.613825 5.534101 Corrected Total 23 1828.364563 R-Square Coeff Var Root MSE clrchng Mean 0.945518 12.80864 2.352467 18.36625 Source DF Type I SS Mean Square F Value Pr > F brand 1 1422.498038 1422.498038 257.04 <.0001 form 2 254.484675 127.242338 22.99 <.0001 brand*form 2 51.768025 25.884013 4.68 0.0231 Source DF Type III SS Mean Square F Value Pr > F brand 1 1422.498038 1422.498038 257.04 <.0001 form 2 254.484675 127.242338 22.99 <.0001 brand*form 2 51.768025 25.884013 4.68 0.0231 Standard Parameter Estimate Error t Value Pr > |t| Intercept 24.49750000 B 1.17623354 20.83 <.0001 brand 1 -15.39750000 B 1.66344543 -9.26 <.0001 brand 2 0.00000000 B . . . form 1 7.90000000 B 1.66344543 4.75 0.0002 form 2 -3.19750000 B 1.66344543 -1.92 0.0706 form 3 0.00000000 B . . . brand*form 1 1 -3.59750000 B 2.35246709 -1.53 0.1436 brand*form 1 2 3.59750000 B 2.35246709 1.53 0.1436 brand*form 1 3 0.00000000 B . . . brand*form 2 1 0.00000000 B . . . brand*form 2 2 0.00000000 B . . . brand*form 2 3 0.00000000 B . . . The SAS System 3 13:20 Thursday, February 17, 2011 The GLM Procedure Dependent Variable: clrchng NOTE: The X'X matrix has been found to be singular, and a generalized inverse was used to solve the normal equations. Terms whose estimates are followed by the letter 'B' are not uniquely estimable.