Whole Model Summary of Fit RSquare 0.714 RSquare Adj 0.682 Root Mean Square Error 0.562 Mean of Response 13.986 Observations (or Sum Wgts) 21.000 Analysis of Variance Sum of Source DF Squares Mean Square F Ratio Model 2 14.149 7.074 22.431 Error 18 5.677 0.315 Prob > F C. Total 20 19.826 <.0001 parameter estimates term estimate std error t ratio prob> Itl Intercept 12.933 0.229 56.41 0.000 Car 1 0.942 0.303 3.10 0.006 Car 3 2.081 0.312 6.66 0.000