2. Evaluate the plot of the effects from the output and discuss it briefly. The SAS System The GLM Procedure Class Level Information Class Levels Values weekday 2 FALSE TRUE Number of Observations Read 90 Number of Observations Used 90 -------------------------------------------------------------------------------- The SAS System The GLM Procedure Dependent Variable: volume Source DF Sum of Squares Mean Square F Value Pr > F Model 3 551822.089 183940.696 17.69 <.0001 Error 86 894135.511 10396.925 Corrected Total 89 1445957.600 R-Square Coeff Var Root MSE volume Mean 0.381631 27.16178 101.9653 375.4000 Source DF Type I SS Mean Square F Value Pr > F hightemp 1 490743.5482 490743.5482 47.20 <.0001 weekday 1 49373.0562 49373.0562 4.75 0.0321 hightemp*weekday 1 11705.4843 11705.4843 1.13 0.2916 Source DF Type III SS Mean Square F Value Pr > F hightemp 1 325909.7819 325909.7819 31.35 <.0001 weekday 1 21619.3814 21619.3814 2.08 0.1529 hightemp*weekday 1 11705.4843 11705.4843 1.13 0.2916 Parameter Estimate Standard Error t Value Pr > |t| Intercept -51.2240504 B 70.6841212 -0.72 0.4706 hightemp 5.9802813 B 1.0346405 5.78 <.0001 weekday FALSE 186.3770049 B 129.2477951 1.44 0.1529 weekday TRUE 0.0000000 B . . . hightemp*weekday FALSE -1.9055805 B 1.7959120 -1.06 0.2916 hightemp*weekday TRUE 0.0000000 B . . . Note: The X'X matrix