Model formula: hp ~ cyl + disp + mpg + drat + wt + qsec + vs + am + gear + carb
root
cyl < 7
cyl >= 7
mpg >= 21.45
mpg < 21.45
disp < 87.05: 62.250 n = 4, err = 140.8
disp >= 87.05: 91.833 n = 6, err = 1376.8
qsec >= 15.98: 112.857 n = 7, err = 306.9
qsec < 15.98: 175.000 n = 1, err = 0.0
drat < 3.18
drat >= 3.18
mpg >= 12.8: 170.000 n = 7, err = 1150.0
mpg < 12.8: 210.000 n = 2, err = 50.0
carb < 6: 246.000 n = 4, err = 582.0
carb >= 6: 335.000 n = 1, err = 0.0