Page 152 - Statistics II for Dummies
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136 Part II: Using Different Types of Regression to Make Predictions
Residual Plots for log(y)
Normal Probability Plot of the Residuals Residuals versus the Fitted Values
99 2
90 1
Percent 50 Standardized Residual 0
10 −1
1
−2 −1 0 1 2 0.0 0.4 0.8 1.2 1.6
Standardized Residual Fitted Value
Figure 7-14: Histogram of the Residuals Residuals versus the Order of the Data
Residual 2.0 2
plots 1.5 1
showing
the fit of Frequency 1.0 Standardized Residual 0
a straight 0.5
line to 0.0 −1
4
3
log(y) data. −1.0 −0.5 0.0 0.5 1.0 1.5 2.0 1 2 Observation Order 5 6
Standardized Residual
12_466469-ch07.indd 136 7/24/09 9:39:11 AM
