Applied Regression Analysis and Experimental Design

Preface Fitting a Model to Data Introduction How to Fit a Line Residuals Transformations to Obtain Linearity Fitting a Model Using Vectors and Matrices Deviations from Means An Example- Value of a Postage Stamp Over Time Problems Goodness of Fit of the Model Introduction Coefficient Estimates for Univariate Regression Coefficient Estimates for Mulitvariate Regression ANOVA Tables The F Test The Coefficient of Determination Predicted Values of Y and Confidence Intervals Residuals Reduced Models Pure Error and Lack of Fit Example- Lactation Curve Problems Which Variable Should Be Included in the Model Introduction Orthogonal Predictor Variables Linear Transformations of the Predictor Variables Adding Nonorthogonal Variables Sequentially Correlation Form Variable Selection- All Possible Regressions Variable Selection- Sequential Methods Qualitative (Dummy) Variables Aggregation of Data Problems Peculiarities of Observations Introduction Sensitive or High Leverage Points Outliers Weighted Least Squares More on Transformations Eigenvalues and Principal Components Ridge Regression Prior Information Cleaning up Data Problems The Experimental Design Model Introduction What Makes an Experiment The Linear Model Tests of Hypothesis Testing of Assumptions Problems Assessing the Treatment Methods Introduction Specific Hypothesis Contrasts Factorial Analysis Unpredicted Effects Conclusion Problems Blocking Introduction Structure of Experimental Units Balanced Incomplete Block Designs Confounding Miscellaneous Tricks Problems Extensions to the Model Introduction Hierarchic Designs Repeated Measures Covariance Analysis Unequal Replication Modeling the Data Problems Appendix A Review of Vectors and Matrices Some Properties of Vectors Some Properties of Vector Spaces Some Properties of Matrices Appendix B Expectation, Linear and Quadratic Forms Expectations Linear Forms Quadratic Forms The F-Statistic Appendix C Data Sets Ultra-Sound Measurements of Horses Hearts Ph Measurement of Leaf Protein Lactation Records of Cows Sports Cars House-Price Data Computer Teaching Data Weedicide Data References Index