R: Examples for 'rpart::car.test.frame'

### ** Examples

z.auto <- rpart(Mileage ~ Weight, car.test.frame)
summary(z.auto)

Call:
rpart(formula = Mileage ~ Weight, data = car.test.frame)
  n= 60 

          CP nsplit rel error    xerror       xstd
1 0.59534912      0 1.0000000 1.0287023 0.17591413
2 0.13452819      1 0.4046509 0.6007057 0.10708506
3 0.01282843      2 0.2701227 0.4222116 0.07995639
4 0.01000000      3 0.2572943 0.4101022 0.07232290

Variable importance
Weight 
   100 

Node number 1: 60 observations,    complexity param=0.5953491
  mean=24.58333, MSE=22.57639 
  left son=2 (45 obs) right son=3 (15 obs)
  Primary splits:
      Weight < 2567.5 to the right, improve=0.5953491, (0 missing)

Node number 2: 45 observations,    complexity param=0.1345282
  mean=22.46667, MSE=8.026667 
  left son=4 (22 obs) right son=5 (23 obs)
  Primary splits:
      Weight < 3087.5 to the right, improve=0.5045118, (0 missing)

Node number 3: 15 observations
  mean=30.93333, MSE=12.46222 

Node number 4: 22 observations
  mean=20.40909, MSE=2.78719 

Node number 5: 23 observations,    complexity param=0.01282843
  mean=24.43478, MSE=5.115312 
  left son=10 (15 obs) right son=11 (8 obs)
  Primary splits:
      Weight < 2747.5 to the right, improve=0.1476996, (0 missing)

Node number 10: 15 observations
  mean=23.8, MSE=4.026667 

Node number 11: 8 observations
  mean=25.625, MSE=4.984375

Examples for 'rpart::car.test.frame'

Automobile Data from 'Consumer Reports' 1990