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Figure 9.1 Relationship between compressive strength (y) and water/cement ratio (x)
Figure 9.2 Slopes and y-intercepts for piecewise linear regression
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Figure 9.3 SAS piecewise linear regression printout
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Figure 9.4 MINITAB graph of reading scores
Figure 9.5 MINITAB analysis of straight-line model for reading score
Figure 9.6 MINITAB graph of reading scores, with quadratic model results
Figure 9.7 SAS analysis of piecewise linear model for reading score
Figure 9.8 MINITAB graph of predicting reading scores using piecewise regression
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Figure 9.9 MINITAB analysis of straight-line model, Example 9.3
Figure 9.10 MINITAB scatterplot of data and least squares line, Example 9.3
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Figure 9.11 MINITAB printout of straight-line model, Example 9.4
Figure 9.12 MINITAB plot of residuals against road length, x
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Figure 9.13 MINITAB printout of weighted least squares fit, Example 9.4
Figure 9.14 MINITAB plot of weight residuals against road length, x
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Figure 9.15 Graph of E(y) for the logistic model
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Figure 9.16 Several chi-square probability distributions
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Figure 9.17 SAS printout of logistic regression on bid status
Figure 9.17 SAS printout of logistic regression on bid status (cont’d)
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Figure 9.18 SAS analysis of complete second-order logistic model, Example 9.6
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Figure 9.19 Sampling distributions of two estimators of a regression coefficient b
Figure 9.20 Ridge trace of b coefficients of a model with three independent variables
Figure 9.21 SAS regression printout for model of carbon monoxide content, Example 9.7
Figure 9.22 SAS ridge trace for model of carbon monoxide content
Figure 9.23a SAS listing of VIFs for ridge regression of carbon monoxide content
Figure 9.23b SAS listing of ridge beta estimates and root MSE for carbon monoxide content model
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Figure 9.24 Probability distribution of e : normal versus heavy-tailed
Figure 9.25 SAS least squares regression printout for fast-food sales model
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Figure 9.26 SAS robust regression printout for fast-food sales model
Figure 9.26 SAS robust regression printout for fast-food sales model (cont’d)
Figure 9.27 Scatterplot of data for MS patients