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Econometric Analysis: International Edition

Econometric Analysis: International Edition

William H Greene

(2014)

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Book Details

Abstract

For first-year graduate courses in Econometrics for Social Scientists.

This title is a Pearson Global Edition.  The Editorial team at Pearson has worked closely with educators around the world to include content which is especially relevant to students outside the United States.

This text serves as a bridge between an introduction to the field of econometrics and the professional literature for graduate students in the social sciences, focusing on applied econometrics and theoretical concepts.

Table of Contents

Section Title Page Action Price
Cover Cover
Econometric Analysis 1
Brief Contents 4
Contents 6
Examples and Applications 25
Preface 33
Part I The Linear Regression Model 41
Econometrics 41
Introduction 41
The Paradigm of Econometrics 41
The Practice of Econometrics 43
Econometric Modeling 44
Plan of the Book 47
Preliminaries 49
Numerical Examples 49
Software and Replication 49
Notational Conventions 49
The Linear Regression Model 51
Introduction 51
The Linear Regression Model 52
Assumptions of the Linear Regression Model 55
Linearity of the Regression Model 55
Full Rank 59
Regression 60
Spherical Disturbances 61
Data Generating Process for the Regressors 63
Normality 63
Independence 64
Summary and Conclusions 65
Least Squares 66
Introduction 66
Least Squares Regression 66
The Least Squares Coefficient Vector 67
Application: An Investment Equation 68
Algebraic Aspects of the Least Squares Solution 70
Projection 71
Partitioned Regression and Partial Regression 72
Partial Regression and Partial Correlation Coefficients 76
Goodness of Fit and the Analysis of Variance 79
The Adjusted R-Squared and a Measure of Fit 82
R-Squared and the Constant Term in the Model 84
Comparing Models 85
Linearly Transformed Regression 86
Summary and Conclusions 87
The Least Squares Estimator 91
Introduction 91
Motivating Least Squares 92
The Population Orthogonality Conditions 92
Minimum Mean Squared Error Predictor 93
Minimum Variance Linear Unbiased Estimation 94
Finite Sample Properties of Least Squares 94
Unbiased Estimation 95
Bias Caused by Omission of Relevant Variables 96
Inclusion of Irrelevant Variables 98
The Variance of the Least Squares Estimator 98
The Gauss–Markov Theorem 100
The Implications of Stochastic Regressors 100
Estimating the Variance of the Least Squares Estimator 101
The Normality Assumption 103
Large Sample Properties of the Least Squares Estimator 103
Consistency of the Least Squares Estimator of β 103
Asymptotic Normality of the Least Squares Estimator 105
Consistency of s2 and the Estimator of Asy. Var[b] 107
Asymptotic Distribution of a Function of b: The Delta Method 108
Asymptotic Efficiency 109
Maximum Likelihood Estimation 113
Interval Estimation 115
Forming a Confidence Interval for a Coefficient 116
Confidence Intervals Based on Large Samples 118
Confidence Interval for a Linear Combination of Coefficients: The Oaxaca Decomposition 119
Prediction and Forecasting 120
Prediction Intervals 121
Predicting y When the Regression Model Describes Log y 121
Prediction Interval for y When the Regression Model Describes Log y 123
Forecasting 127
Data Problems 128
Multicollinearity 129
Pretest Estimation 131
Principal Components 132
Missing Values and Data Imputation 134
Measurement Error 137
Outliers and Influential Observations 139
Summary and Conclusions 142
Hypothesis Tests and Model Selection 148
Introduction 148
Hypothesis Testing Methodology 148
Restrictions and Hypotheses 149
Nested Models 150
Testing Procedures—Neyman–Pearson Methodology 151
Size, Power, and Consistency of a Test 151
A Methodological Dilemma: Bayesian versus Classical Testing 152
Two Approaches to Testing Hypotheses 152
Wald Tests Based on the Distance Measure 155
Testing a Hypothesis about a Coefficient 155
The F Statistic and the Least Squares Discrepancy 157
Testing Restrictions Using the Fit of the Regression 161
The Restricted Least Squares Estimator 161
The Loss of Fit from Restricted Least Squares 162
Testing the Significance of the Regression 166
Solving Out the Restrictions and a Caution about Using R2 166
Nonnormal Disturbances and Large-Sample Tests 167
Testing Nonlinear Restrictions 171
Choosing between Nonnested Models 174
Testing Nonnested Hypotheses 174
An Encompassing Model 175
Comprehensive Approach—The J Test 176
A Specification Test 177
Model Building—A General to Simple Strategy 178
Model Selection Criteria 179
Model Selection 180
Classical Model Selection 180
Bayesian Model Averaging 181
Summary and Conclusions 183
Functional Form and Structural Change 189
Introduction 189
Using Binary Variables 189
Binary Variables in Regression 189
Several Categories 192
Several Groupings 192
Threshold Effects and Categorical Variables 194
Treatment Effects and Difference in Differences Regression 195
Nonlinearity in the Variables 198
Piecewise Linear Regression 198
Functional Forms 200
Interaction Effects 201
Identifying Nonlinearity 202
Intrinsically Linear Models 205
Modeling and Testing for a Structural Break 208
Different Parameter Vectors 208
Insufficient Observations 209
Change in a Subset of Coefficients 210
Tests of Structural Break with Unequal Variances 211
Predictive Test of Model Stability 214
Summary and Conclusions 215
Nonlinear, Semiparametric, and Nonparametric Regression Models 221
Introduction 221
Nonlinear Regression Models 222
Assumptions of the Nonlinear Regression Model 222
The Nonlinear Least Squares Estimator 224
Large Sample Properties of the Nonlinear Least Squares Estimator 226
Hypothesis Testing and Parametric Restrictions 229
Applications 231
Computing the Nonlinear Least Squares Estimator 240
Median and Quantile Regression 242
Least Absolute Deviations Estimation 243
Quantile Regression Models 247
Partially Linear Regression 250
Nonparametric Regression 252
Summary and Conclusions 255
Endogeneity and Instrumental Variable Estimation 259
Introduction 259
Assumptions of the Extended Model 263
Estimation 264
Least Squares 265
The Instrumental Variables Estimator 265
Motivating the Instrumental Variables Estimator 267
Two-Stage Least Squares 270
Two Specification Tests 273
The Hausman and Wu Specification Tests 274
A Test for Overidentification 278
Measurement Error 279
Least Squares Attenuation 280
Instrumental Variables Estimation 282
Proxy Variables 282
Nonlinear Instrumental Variables Estimation 286
Weak Instruments 289
Natural Experiments and the Search for Causal Effects 291
Summary and Conclusions 294
Part II Generalized Regression Model and Equation Systems 297
The Generalized Regression Model and Heteroscedasticity 297
Introduction 297
Inefficient Estimation by Least Squares and Instrumental Variables 298
Finite-Sample Properties of Ordinary Least Squares 299
Asymptotic Properties of Ordinary Least Squares 299
Robust Estimation of Asymptotic Covariance Matrices 301
Instrumental Variable Estimation 302
Efficient Estimation by Generalized Least Squares 304
Generalized Least Squares (GLS) 304
Feasible Generalized Least Squares (FGLS) 306
Heteroscedasticity and Weighted Least Squares 308
Ordinary Least Squares Estimation 309
Inefficiency of Ordinary Least Squares 310
The Estimated Covariance Matrix of b 310
Estimating the Appropriate Covariance Matrix for Ordinary Least Squares 312
Testing for Heteroscedasticity 315
White’s General Test 315
The Breusch–Pagan/Godfrey LM Test 316
Weighted Least Squares 317
Weighted Least Squares with Known Ω 318
Estimation When Ω Contains Unknown Parameters 319
Applications 320
Multiplicative Heteroscedasticity 320
Groupwise Heteroscedasticity 322
Summary and Conclusions 325
Systems of Equations 330
Introduction 330
The Seemingly Unrelated Regressions Model 332
Generalized Least Squares 333
Seemingly Unrelated Regressions with Identical Regressors 335
Feasible Generalized Least Squares 336
Testing Hypotheses 336
A Specification Test for the SUR Model 337
The Pooled Model 339
Seemingly Unrelated Generalized Regression Models 344
Nonlinear Systems of Equations 345
Systems of Demand Equations: Singular Systems 347
Cobb–Douglas Cost Function 347
Flexible Functional Forms: The Translog Cost Function 350
Simultaneous Equations Models 354
Systems of Equations 355
A General Notation for Linear Simultaneous Equations Models 358
The Problem of Identification 361
Single Equation Estimation and Inference 366
System Methods of Estimation 369
Testing in the Presence of Weak Instruments 374
Summary and Conclusions 376
Models for Panel Data 383
Introduction 383
Panel Data Models 384
General Modeling Framework for Analyzing Panel Data 385
Model Structures 386
Extensions 387
Balanced and Unbalanced Panels 388
Well-Behaved Panel Data 388
The Pooled Regression Model 389
Least Squares Estimation of the Pooled Model 389
Robust Covariance Matrix Estimation 390
Clustering and Stratification 392
Robust Estimation Using Group Means 394
Estimation with First Differences 395
The Within- and Between-Groups Estimators 397
The Fixed Effects Model 399
Least Squares Estimation 400
Small T Asymptotics 402
Testing the Significance of the Group Effects 403
Fixed Time and Group Effects 403
Time-Invariant Variables and Fixed Effects Vector Decomposition 404
Random Effects 410
Least Squares Estimation 412
Generalized Least Squares 413
Feasible Generalized Least Squares When Σ Is Unknown 414
Testing for Random Effects 416
Hausman’s Specification Test for the Random Effects Model 419
Extending the Unobserved Effects Model: Mundlak’s Approach 420
Extending the Random and Fixed Effects Models: Chamberlain’s Approach 421
Nonspherical Disturbances and Robust Covariance Estimation 425
Robust Estimation of the Fixed Effects Model 425
Heteroscedasticity in the Random Effects Model 427
Autocorrelation in Panel Data Models 428
Cluster (and Panel) Robust Covariance Matrices for Fixed and Random Effects Estimators 428
Spatial Autocorrelation 429
Endogeneity 434
Hausman and Taylor’s Instrumental Variables Estimator 434
Consistent Estimation of Dynamic Panel Data Models: Anderson and Hsiao’s IV Estimator 438
Efficient Estimation of Dynamic Panel Data Models—The Arellano/Bond Estimators 440
Nonstationary Data and Panel Data Models 450
Nonlinear Regression with Panel Data 451
A Robust Covariance Matrix for Nonlinear Least Squares 451
Fixed Effects 452
Random Effects 454
Systems of Equations 455
Parameter Heterogeneity 456
The Random Coefficients Model 457
A Hierarchical Linear Model 460
Parameter Heterogeneity and Dynamic Panel Data Models 461
Summary and Conclusions 466
Part III Estimation Methodology 472
Estimation Frameworks in Econometrics 472
Introduction 472
Parametric Estimation and Inference 474
Classical Likelihood-Based Estimation 474
Modeling Joint Distributions with Copula Functions 476
Semiparametric Estimation 479
GMM Estimation in Econometrics 479
Maximum Empirical Likelihood Estimation 480
Least Absolute Deviations Estimation and Quantile Regression 481
Kernel Density Methods 482
Comparing Parametric and Semiparametric Analyses 483
Nonparametric Estimation 484
Kernel Density Estimation 485
Properties of Estimators 487
Statistical Properties of Estimators 488
Extremum Estimators 489
Assumptions for Asymptotic Properties of Extremum Estimators 489
Asymptotic Properties of Estimators 492
Testing Hypotheses 493
Summary and Conclusions 494
Minimum Distance Estimation and the Generalized Method of Moments 495
Introduction 495
Consistent Estimation: The Method of Moments 496
Random Sampling and Estimating the Parameters of Distributions 497
Asymptotic Properties of the Method of Moments Estimator 501
Summary—The Method of Moments 503
Minimum Distance Estimation 503
The Generalized Method of Moments (GMM) Estimator 508
Estimation Based on Orthogonality Conditions 508
Generalizing the Method of Moments 510
Properties of the GMM Estimator 514
Testing Hypotheses in the GMM Framework 519
Testing the Validity of the Moment Restrictions 519
GMM Counterparts to the WALD, LM, and LR Tests 520
GMM Estimation of Econometric Models 522
Single-Equation Linear Models 522
Single-Equation Nonlinear Models 528
Seemingly Unrelated Regression Models 531
Simultaneous Equations Models with Heteroscedasticity 533
GMM Estimation of Dynamic Panel Data Models 536
Summary and Conclusions 547
Maximum Likelihood Estimation 549
Introduction 549
The Likelihood Function and Identification of the Parameters 549
Efficient Estimation: The Principle of Maximum Likelihood 551
Properties of Maximum Likelihood Estimators 553
Regularity Conditions 554
Properties of Regular Densities 555
The Likelihood Equation 557
The Information Matrix Equality 557
Asymptotic Properties of the Maximum Likelihood Estimator 557
Consistency 558
Asymptotic Normality 559
Asymptotic Efficiency 560
Invariance 561
Conclusion 561
Estimating the Asymptotic Variance of the Maximum Likelihood Estimator 561
Conditional Likelihoods, Econometric Models, and the GMM Estimator 563
Hypothesis and Specification Tests and Fit Measures 564
The Likelihood Ratio Test 566
The Wald Test 567
The Lagrange Multiplier Test 569
An Application of the Likelihood-Based Test Procedures 571
Comparing Models and Computing Model Fit 573
Vuong’s Test and the Kullback–Leibler Information Criterion 574
Two-Step Maximum Likelihood Estimation 576
Pseudo-Maximum Likelihood Estimation and Robust Asymptotic Covariance Matrices 582
Maximum Likelihood and GMM Estimation 583
Maximum Likelihood and M Estimation 583
Sandwich Estimators 585
Cluster Estimators 586
Applications of Maximum Likelihood Estimation 588
The Normal Linear Regression Model 588
The Generalized Regression Model 592
Multiplicative Heteroscedasticity 594
Autocorrelation 597
Seemingly Unrelated Regression Models 600
The Pooled Model 600
The SUR Model 602
Exclusion Restrictions 602
Simultaneous Equations Models 607
Maximum Likelihood Estimation of Nonlinear Regression Models 608
Panel Data Applications 613
ML Estimation of the Linear Random Effects Model 614
Nested Random Effects 616
Random Effects in Nonlinear Models: MLE Using Quadrature 620
Fixed Effects in Nonlinear Models: Full MLE 624
Latent Class and Finite Mixture Models 628
A Finite Mixture Model 629
Measured and Unmeasured Heterogeneity 631
Predicting Class Membership 631
A Conditional Latent Class Model 632
Determining the Number of Classes 634
A Panel Data Application 635
Summary and Conclusions 638
Simulation-Based Estimation and Inference and Random Parameter Models 643
Introduction 643
Random Number Generation 645
Generating Pseudo-Random Numbers 645
Sampling from a Standard Uniform Population 646
Sampling from Continuous Distributions 647
Sampling from a Multivariate Normal Population 648
Sampling from Discrete Populations 648
Simulation-Based Statistical Inference: The Method of Krinsky and Robb 649
Bootstrapping Standard Errors and Confidence Intervals 651
Monte Carlo Studies 655
A Monte Carlo Study: Behavior of a Test Statistic 657
A Monte Carlo Study: The Incidental Parameters Problem 659
Simulation-Based Estimation 661
Random Effects in a Nonlinear Model 661
Monte Carlo Integration 663
Halton Sequences and Random Draws for Simulation-Based Integration 665
Computing Multivariate Normal Probabilities Using the GHK Simulator 667
Simulation-Based Estimation of Random Effects Models 669
A Random Parameters Linear Regression Model 674
Hierarchical Linear Models 679
Nonlinear Random Parameter Models 681
Individual Parameter Estimates 682
Mixed Models and Latent Class Models 690
Summary and Conclusions 693
Bayesian Estimation and Inference 695
Introduction 695
Bayes Theorem and the Posterior Density 696
Bayesian Analysis of the Classical Regression Model 698
Analysis with a Noninformative Prior 699
Estimation with an Informative Prior Density 701
Bayesian Inference 704
Point Estimation 704
Interval Estimation 705
Hypothesis Testing 706
Large-Sample Results 708
Posterior Distributions and the Gibbs Sampler 708
Application: Binomial Probit Model 711
Panel Data Application: Individual Effects Models 714
Hierarchical Bayes Estimation of a Random Parameters Model 716
Summary and Conclusions 718
Part IV Cross Sections, Panel Data, and Microeconometrics 721
Discrete Choice 721
Introduction 721
Models for Binary Outcomes 723
Random Utility Models for Individual Choice 724
A Latent Regression Model 726
Functional Form and Regression 727
Estimation and Inference in Binary Choice Models 730
Robust Covariance Matrix Estimation 732
Marginal Effects and Average Partial Effects 733
Average Partial Effects 736
Interaction Effects 739
Measuring Goodness of Fit 741
Hypothesis Tests 743
Endogenous Right-Hand-Side Variables in Binary Choice Models 746
Endogenous Choice-Based Sampling 750
Specification Analysis 751
Omitted Variables 753
Heteroscedasticity 754
Binary Choice Models for Panel Data 756
The Pooled Estimator 757
Random Effects Models 758
Fixed Effects Models 761
A Conditional Fixed Effects Estimator 762
Mundlak’s Approach, Variable Addition, and Bias Reduction 767
Dynamic Binary Choice Models 769
A Semiparametric Model for Individual Heterogeneity 771
Modeling Parameter Heterogeneity 773
Nonresponse, Attrition, and Inverse Probability Weighting 774
Bivariate and Multivariate Probit Models 778
Maximum Likelihood Estimation 779
Testing for Zero Correlation 782
Partial Effects 782
A Panel Data Model for Bivariate Binary Response 784
Endogenous Binary Variable in a Recursive Bivariate Probit Model 785
Endogenous Sampling in a Binary Choice Model 789
A Multivariate Probit Model 792
Summary and Conclusions 795
Discrete Choices and Event Counts 800
Introduction 800
Models for Unordered Multiple Choices 801
Random Utility Basis of the Multinomial Logit Model 801
The Multinomial Logit Model 803
The Conditional Logit Model 806
The Independence from Irrelevant Alternatives Assumption 807
Nested Logit Models 808
The Multinomial Probit Model 810
The Mixed Logit Model 811
A Generalized Mixed Logit Model 812
Application: Conditional Logit Model for Travel Mode Choice 813
Estimating Willingness to Pay 819
Panel Data and Stated Choice Experiments 821
Aggregate Market Share Data—The BLP Random Parameters Model 822
Random Utility Models for Ordered Choices 824
The Ordered Probit Model 827
A Specification Test for the Ordered Choice Model 831
Bivariate Ordered Probit Models 832
Panel Data Applications 834
Ordered Probit Models with Fixed Effects 834
Ordered Probit Models with Random Effects 835
Extensions of the Ordered Probit Model 838
Threshold Models—Generalized Ordered Choice Models 839
Thresholds and Heterogeneity—Anchoring Vignettes 840
Models for Counts of Events 842
The Poisson Regression Model 843
Measuring Goodness of Fit 844
Testing for Overdispersion 845
Heterogeneity and the Negative Binomial Regression Model 846
Functional Forms for Count Data Models 847
Truncation and Censoring in Models for Counts 850
Panel Data Models 855
Robust Covariance Matrices for Pooled Estimators 856
Fixed Effects 857
Random Effects 858
Two-Part Models: Zero Inflation and Hurdle Models 861
Endogenous Variables and Endogenous Participation 866
Summary and Conclusions 869
Limited Dependent Variables—Truncation, Censoring, and Sample Selection 873
Introduction 873
Truncation 873
Truncated Distributions 874
Moments of Truncated Distributions 875
The Truncated Regression Model 877
The Stochastic Frontier Model 879
Censored Data 885
The Censored Normal Distribution 886
The Censored Regression (Tobit) Model 888
Estimation 890
Two-Part Models and Corner Solutions 892
Some Issues in Specification 898
Heteroscedasticity 898
Nonnormality 899
Panel Data Applications 900
Models for Duration 901
Models for Duration Data 902
Duration Data 902
A Regression-Like Approach: Parametric Models of Duration 903
Theoretical Background 903
Models of the Hazard Function 904
Maximum Likelihood Estimation 906
Exogenous Variables 907
Heterogeneity 908
Nonparametric and Semiparametric Approaches 909
Incidental Truncation and Sample Selection 912
Incidental Truncation in a Bivariate Distribution 913
Regression in a Model of Selection 913
Two-Step and Maximum Likelihood Estimation 916
Sample Selection in Nonlinear Models 920
Panel Data Applications of Sample Selection Models 923
Common Effects in Sample Selection Models 924
Attrition 926
Evaluating Treatment Effects 928
Regression Analysis of Treatment Effects 930
The Normality Assumption 932
Estimating the Effect of Treatment on the Treated 933
Propensity Score Matching 934
Regression Discontinuity 937
Summary and Conclusions 938
Part V Time Series and Macroeconometrics 943
Serial Correlation 943
Introduction 943
The Analysis of Time-Series Data 946
Disturbance Processes 949
Characteristics of Disturbance Processes 949
AR(1) Disturbances 950
Some Asymptotic Results for Analyzing Time-Series Data 952
Convergence of Moments—The Ergodic Theorem 953
Convergence to Normality—A Central Limit Theorem 955
Least Squares Estimation 958
Asymptotic Properties of Least Squares 958
Estimating the Variance of the Least Squares Estimator 959
GMM Estimation 961
Testing for Autocorrelation 962
Lagrange Multiplier Test 962
Box and Pierce’s Test and Ljung’s Refinement 962
The Durbin–Watson Test 963
Testing in the Presence of a Lagged Dependent Variable 963
Summary of Testing Procedures 964
Efficient Estimation When Ω Is Known 964
Estimation When Ω Is Known 966
AR(1) Disturbances 966
Application: Estimation of a Model with Autocorrelation 967
Estimation with a Lagged Dependent Variable 969
Autoregressive Conditional Heteroscedasticity 970
The ARCH(1) Model 971
ARCH(q), ARCH-in-Mean, and Generalized ARCH Models 972
Maximum Likelihood Estimation of the Garch Model 974
Testing for Garch Effects 976
Pseudo–Maximum Likelihood Estimation 977
Summary and Conclusions 979
Nonstationary Data 982
Introduction 982
Nonstationary Processes and Unit Roots 982
Integrated Processes and Differencing 982
Random Walks, Trends, and Spurious Regressions 984
Tests for Unit Roots in Economic Data 987
The Dickey–Fuller Tests 988
The KPSS Test of Stationarity 998
Cointegration 999
Common Trends 1002
Error Correction and VAR Representations 1003
Testing for Cointegration 1005
Estimating Cointegration Relationships 1007
Application: German Money Demand 1007
Cointegration Analysis and a Long-Run Theoretical Model 1008
Testing for Model Instability 1009
Nonstationary Panel Data 1010
Summary and Conclusions 1011
Part VI Appendices 1013
Appendix A Matrix Algebra 1013
Terminology 1013
Algebraic Manipulation of Matrices 1013
Equality of Matrices 1013
Transposition 1014
Matrix Addition 1014
Vector Multiplication 1015
A Notation for Rows and Columns of a Matrix 1015
Matrix Multiplication and Scalar Multiplication 1015
Sums of Values 1017
A Useful Idempotent Matrix 1018
Geometry of Matrices 1019
Vector Spaces 1019
Linear Combinations of Vectors and Basis Vectors 1021
Linear Dependence 1022
Subspaces 1023
Rank of a Matrix 1024
Determinant of a Matrix 1026
A Least Squares Problem 1027
Solution of a System of Linear Equations 1029
Systems of Linear Equations 1029
Inverse Matrices 1030
Nonhomogeneous Systems of Equations 1032
Solving the Least Squares Problem 1032
Partitioned Matrices 1032
Addition and Multiplication of Partitioned Matrices 1033
Determinants of Partitioned Matrices 1033
Inverses of Partitioned Matrices 1033
Deviations from Means 1034
Kronecker Products 1034
Characteristic Roots and Vectors 1035
The Characteristic Equation 1035
Characteristic Vectors 1036
General Results for Characteristic Roots and Vectors 1036
Diagonalization and Spectral Decomposition of a Matrix 1037
Rank of a Matrix 1037
Condition Number of a Matrix 1039
Trace of a Matrix 1039
Determinant of a Matrix 1040
Powers of a Matrix 1040
Idempotent Matrices 1042
Factoring a Matrix 1042
The Generalized Inverse of a Matrix 1043
Quadratic Forms and Definite Matrices 1044
Nonnegative Definite Matrices 1045
Idempotent Quadratic Forms 1046
Comparing Matrices 1046
Calculus and Matrix Algebra 1047
Differentiation and the Taylor Series 1047
Optimization 1050
Constrained Optimization 1052
Transformations 1054
Appendix B Probability and Distribution Theory 1055
Introduction 1055
Random Variables 1055
Probability Distributions 1055
Cumulative Distribution Function 1056
Expectations of a Random Variable 1057
Some Specific Probability Distributions 1059
The Normal Distribution 1059
The Chi-Squared, t, and F Distributions 1061
Distributions with Large Degrees of Freedom 1063
Size Distributions: The Lognormal Distribution 1064
The Gamma and Exponential Distributions 1064
The Beta Distribution 1065
The Logistic Distribution 1065
The Wishart Distribution 1065
Discrete Random Variables 1066
The Distribution of a Function of a Random Variable 1066
Representations of a Probability Distribution 1068
Joint Distributions 1070
Marginal Distributions 1070
Expectations in a Joint Distribution 1071
Covariance and Correlation 1071
Distribution of a Function of Bivariate Random Variables 1072
Conditioning in a Bivariate Distribution 1074
Regression: The Conditional Mean 1074
Conditional Variance 1075
Relationships Among Marginal and Conditional Moments 1075
The Analysis of Variance 1077
The Bivariate Normal Distribution 1077
Multivariate Distributions 1078
Moments 1078
Sets of Linear Functions 1079
Nonlinear Functions 1080
The Multivariate Normal Distribution 1081
Marginal and Conditional Normal Distributions 1081
The Classical Normal Linear Regression Model 1082
Linear Functions of a Normal Vector 1083
Quadratic forms in a Standard Normal Vector 1083
The F Distribution 1085
A Full Rank Quadratic Form 1085
Independence of a Linear and a Quadratic Form 1086
Appendix C Estimation and Inference 1087
Introduction 1087
Samples and Random Sampling 1088
Descriptive Statistics 1088
Statistics as Estimators—Sampling Distributions 1091
Point Estimation of Parameters 1095
Estimation in a Finite Sample 1095
Efficient Unbiased Estimation 1098
Interval Estimation 1100
Hypothesis Testing 1102
Classical Testing Procedures 1102
Tests Based on Confidence Intervals 1105
Specification Tests 1106
Appendix D Large-Sample Distribution Theory 1106
Introduction 1106
Large-Sample Distribution Theory 1107
Convergence in Probability 1107
Other forms of Convergence and Laws of Large Numbers 1110
Convergence of Functions 1113
Convergence to a Random Variable 1114
Convergence in Distribution: Limiting Distributions 1116
Central Limit Theorems 1118
The Delta Method 1123
Asymptotic Distributions 1124
Asymptotic Distribution of a Nonlinear Function 1126
Asymptotic Expectations 1127
Sequences and the Order of a Sequence 1128
Appendix E Computation and Optimization 1129
Introduction 1129
Computation in Econometrics 1130
Computing Integrals 1130
The Standard Normal Cumulative Distribution Function 1130
The Gamma and Related Functions 1131
Approximating Integrals by Quadrature 1132
Optimization 1133
Algorithms 1135
Computing Derivatives 1136
Gradient Methods 1137
Aspects of Maximum Likelihood Estimation 1140
Optimization with Constraints 1141
Some Practical Considerations 1142
The EM Algorithm 1144
Examples 1146
Function of One Parameter 1146
Function of Two Parameters: The Gamma Distribution 1147
A Concentrated Log-Likelihood Function 1148
Appendix F Data Sets Used in Applications 1149
References 1155
Combined Author and Subject Index 1211