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More About This Title Applied Linear Regression, Third Edition
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1 Scatterplots and Regression.
1.1 Scatterplots.
1.2 Mean Functions.
1.3 Variance Functions.
1.4 Summary Graph.
1.5 Tools for Looking at Scatterplots.
1.5.1 Size.
1.5.2 Transformations.
1.5.3 Smoothers for the Mean Function.
1.6 Scatterplot Matrices.
Problems.
2 Simple Linear Regression.
2.1 Ordinary Least Squares Estimation.
2.2 Least Squares Criterion.
2.3 Estimating σ 2.
2.4 Properties of Least Squares Estimates.
2.5 Estimated Variances.
2.6 Comparing Models: The Analysis of Variance.
2.6.1 The F-Test for Regression.
2.6.2 Interpreting p-values.
2.6.3 Power of Tests.
2.7 The Coefficient of Determination, R2.
2.8 Confidence Intervals and Tests.
2.8.1 The Intercept.
2.8.2 Slope.
2.8.3 Prediction.
2.8.4 Fitted Values.
2.9 The Residuals.
Problems.
3 Multiple Regression.
3.1 Adding a Term to a Simple Linear Regression Model.
3.1.1 Explaining Variability.
3.1.2 Added-Variable Plots.
3.2 The Multiple Linear Regression Model.
3.3 Terms and Predictors.
3.4 Ordinary Least Squares.
3.4.1 Data and Matrix Notation.
3.4.2 Variance-Covariance Matrix of e.
3.4.3 Ordinary Least Squares Estimators.
3.4.4 Properties of the Estimates.
3.4.5 Simple Regression in Matrix Terms.
3.5 The Analysis of Variance.
3.5.1 The Coefficient of Determination.
3.5.2 Hypotheses Concerning One of the Terms.
3.5.3 Relationship to the t -Statistic.
3.5.4 t-Tests and Added-Variable Plots.
3.5.5 Other Tests of Hypotheses.
3.5.6 Sequential Analysis of Variance Tables.
3.6 Predictions and Fitted Values.
Problems.
4 Drawing Conclusions.
4.1 Understanding Parameter Estimates.
4.1.1 Rate of Change.
4.1.2 Signs of Estimates.
4.1.3 Interpretation Depends on Other Terms in the Mean Function.
4.1.4 Rank Deficient and Over-Parameterized Mean Functions.
4.1.5 Tests.
4.1.6 Dropping Terms.
4.1.7 Logarithms.
4.2 Experimentation Versus Observation.
4.3 Sampling from a Normal Population.
4.4 More on R2.
4.4.1 Simple Linear Regression and R2.
4.4.2 Multiple Linear Regression.
4.4.3 Regression through the Origin.
4.5 Missing Data.
4.5.1 Missing at Random.
4.5.2 Alternatives.
4.6 Computationally Intensive Methods.
4.6.1 Regression Inference without Normality.
4.6.2 Nonlinear Functions of Parameters.
4.6.3 Predictors Measured with Error.
Problems.
5 Weights, Lack of Fit, and More.
5.1 Weighted Least Squares.
5.1.1 Applications of Weighted Least Squares.
5.1.2 Additional Comments.
5.2 Testing for Lack of Fit, Variance Known.
5.3 Testing for Lack of Fit, Variance Unknown.
5.4 General F Testing.
5.4.1 Non-null Distributions.
5.4.2 Additional Comments.
5.5 Joint Confidence Regions.
Problems.
6 Polynomials and Factors.
6.1 Polynomial Regression.
6.1.1 Polynomials with Several Predictors.
6.1.2 Using the Delta Method to Estimate a Minimum or a Maximum.
6.1.3 Fractional Polynomials.
6.2 Factors.
6.2.1 No Other Predictors.
6.2.2 Adding a Predictor: Comparing Regression Lines.
6.2.3 Additional Comments.
6.3 Many Factors.
6.4 Partial One-Dimensional Mean Functions.
6.5 Random Coefficient Models.
Problems.
7 Transformations.
7.1 Transformations and Scatterplots.
7.1.1 Power Transformations.
7.1.2 Transforming Only the Predictor Variable.
7.1.3 Transforming the Response Only.
7.1.4 The Box and Cox Method.
7.2 Transformations and Scatterplot Matrices.
7.2.1 The 1D Estimation Result and Linearly Related Predictors.
7.2.2 Automatic Choice of Transformation of Predictors.
7.3 Transforming the Response.
7.4 Transformations of Nonpositive Variables.
Problems.
8 Regression Diagnostics: Residuals.
8.1 The Residuals.
8.1.1 Difference Between ˆe and e.
8.1.2 The Hat Matrix.
8.1.3 Residuals and the Hat Matrix with Weights.
8.1.4 The Residuals When the Model Is Correct.
8.1.5 The Residuals When the Model Is Not Correct.
8.1.6 Fuel Consumption Data.
8.2 Testing for Curvature.
8.3 Nonconstant Variance.
8.3.1 Variance Stabilizing Transformations.
8.3.2 A Diagnostic for Nonconstant Variance.
8.3.3 Additional Comments.
8.4 Graphs for Model Assessment.
8.4.1 Checking Mean Functions.
8.4.2 Checking Variance Functions.
Problems.
9 Outliers and Influence.
9.1 Outliers.
9.1.1 An Outlier Test.
9.1.2 Weighted Least Squares.
9.1.3 Significance Levels for the Outlier Test.
9.1.4 Additional Comments.
9.2 Influence of Cases.
9.2.1 Cook’s Distance.
9.2.2 Magnitude of Di .
9.2.3 Computing Di .
9.2.4 Other Measures of Influence.
9.3 Normality Assumption.
Problems.
10 Variable Selection.
10.1 The Active Terms.
10.1.1 Collinearity.
10.1.2 Collinearity and Variances.
10.2 Variable Selection.
10.2.1 Information Criteria.
10.2.2 Computationally Intensive Criteria.
10.2.3 Using Subject-Matter Knowledge.
10.3 Computational Methods.
10.3.1 Subset Selection Overstates Significance.
10.4 Windmills.
10.4.1 Six Mean Functions.
10.4.2 A Computationally Intensive Approach.
Problems.
11 Nonlinear Regression.
11.1 Estimation for Nonlinear Mean Functions.
11.2 Inference Assuming Large Samples.
11.3 Bootstrap Inference.
11.4 References.
Problems.
12 Logistic Regression.
12.1 Binomial Regression.
12.1.1 Mean Functions for Binomial Regression.
12.2 Fitting Logistic Regression.
12.2.1 One-Predictor Example.
12.2.2 Many Terms.
12.2.3 Deviance.
12.2.4 Goodness-of-Fit Tests.
12.3 Binomial Random Variables.
12.3.1 Maximum Likelihood Estimation.
12.3.2 The Log-Likelihood for Logistic Regression.
12.4 Generalized Linear Models.
Problems.
Appendix.
A.1 Web Site.
A.2 Means and Variances of Random Variables.
A.2.1 E Notation.
A.2.2 Var Notation.
A.2.3 Cov Notation.
A.2.4 Conditional Moments.
A.3 Least Squares for Simple Regression.
A.4 Means and Variances of Least Squares Estimates.
A.5 Estimating E(Y |X) Using a Smoother.
A.6 A Brief Introduction to Matrices and Vectors.
A.6.1 Addition and Subtraction.
A.6.2 Multiplication by a Scalar.
A.6.3 Matrix Multiplication.
A.6.4 Transpose of a Matrix.
A.6.5 Inverse of a Matrix.
A.6.6 Orthogonality.
A.6.7 Linear Dependence and Rank of a Matrix.
A.7 Random Vectors.
A.8 Least Squares Using Matrices.
A.8.1 Properties of Estimates.
A.8.2 The Residual Sum of Squares.
A.8.3 Estimate of Variance.
A.9 The QR Factorization.
A.10 Maximum Likelihood Estimates.
A.11 The Box-Cox Method for Transformations.
A.11.1 Univariate Case.
A.11.2 Multivariate Case.
A.12 Case Deletion in Linear Regression.
References.
Author Index.
Subject Index.
English
"Twenty years after the release of the excellent previous edition, the author has succeeded in putting together a superb and inviting third edition…" (Technometrics, August 2005)
