| TITLE : ECONOMETRIC METHODS. 4TH ED. |
CONTENTS
About the Authors iii
Preface xv
1. Relationships between Two Variables 1
1.1 Examples of Bivariate Relationships 1
1.2 The Correlation Coefficient 6
1.3 Probability Models for Two Variables 12
1.4 The Two-Variable Linear Regression Model 15
1.5 Inference in the Two-Variable, Least-Squares Model 23
1.6 Analysis of Variance in the Two-Variable Regression Model 29
1.7 Prediction in the Two-Variable Regression Model 31
1.8 Gasoline Consumption: A Preliminary Analysis 33
2. Further Aspect of Two-Variable Relationships 41
2.1 Time as a Regressor 42
2.2 Transformation of Variables 44
2.3 An Empirical Example of a Nonlinear Relation: U.S. Inflation
and Unemployment 49
2.4 Lagged Dependent Variable as Regressor 52
2.5 Stationary and Nonstationary Series 57
2.6 Maximum Likelihood Estimation of the Autoregressive Equation 61
3. The k-Variable Linear Equation 69
3.1 Matrix Formulation of the k-Variable Model 70
3.2 Partial Correlation Coefficients 76
3.3 The Geometry of Least Squares 83
3.4 Inference in the k-Variable Equation 86
3.5 Prediction 99
4. Some Tests of the k-Variable Linear Equation for Specification
Error
109
4.1 Specification Error 109
4.2 Model Evaluation and Diagnostic Tests 112
4.3 Tests of Parameter Constancy 113
4.4 A Numerical Illustration 121
4.5 Tests of Structural Change 126
4.6 Dummy Variables 133
5. Maximum Likelihood (ML), Generalized Least Squares (GLS), and
Instrumental Variable (IV) Estimators 142
5.1 Maximum Likelihood Estimators 142
5.2 ML Estimation of the Linear Model 145
5.3 Likelihood Ratio, Wald, and Lagrange Multiplier Tests 147
5.4 ML Estimation of the Linear Model with Nonspherical Disturbances
151
5.5 Instrumental Variable (IV) Estimators 153
6. Heteroscedasticity and Autocorrelation 162
6.1 Properties of OLS Estimators 163
6.2 Tests for Heteroscedasticity 166
6.3 Estimation Under Heteroscedasticity 170
6.4 Autocorrelated Disturbances 174
6.5 OLS and Autocorrelated Disturbances 176
6.6 Testing for Autocorrelated Disturbances 178
6.7 Estimation of Relationships with Autocorrelated Disturbances
188
6.8 Forecasting with Autocorrelated Disturbances 192
6.9 Autoegressive conditional Heteroscedasticity (ARCH) 195
7. Univariate Time Series Modeling 204
7.1 A Rationale for Univariate Analysis 205
7.2 Properties of AR, MA and ARMA Processes 207
7.3 Testing for Stationarity 215
7.4 Identification, Estimation, and Testing of ARIMA Models 228
7.5 Forecasting 231
7.6 Seasonality 235
7.7 A Numerical Example: Monthly Housing Starts 236
8. Autoregressive Distributed Lag Relationships 244
8.1 Autoregressive Distributed Lag Relations 244
8.2 Specification and Testing 248
8.3 Nonstationary Regressors 259
8.4 A Numerical Example 265
8.5 Nonnested Models 280
9. Multiple Equation Models 287
9.1 Vector Autoregressions (VARs) 287
9.2 Estimation of VARs 295
9.3 Vector Error Correction Models 301
9.4 Simultaneous Structural Equation Models 305
9.5 Identification Conditions 309
9.6 Estimation of Structural Equations 314
10. Generalized Method of Moments 327
10.1 The Method of Moments 328
10.2 OLS as a Moment Problem 329
10.3 Instrumental Variables as a Moment Problem 330
10.4 GMM and the Orthogonality Condition 333
10.5 Distribution of the GMM estimator 335
10.6 Applications 336
10.7 Readings 344
11. A Smorgasbord of Computationally Intensive Methods 348
11.1 An Introduction to Monte Carlo Methods 348
11.2 Monte Carlo Methods and Permutation Tests 359
11.3 The Bootstrap 362
11.4 Nonparametric Density Estimation 370
11.5 Nonparametric Regression 379
11.6 References 385
12. Panel Data 388
12.1 Sources and Types of Panel Data 389
12.2 The Simplest Case-The Pooled Estimator 390
12.3 Two Extensions to the Simple Model 390
12.4 The Random Effects Model 391
12.5 Random Effects as a Combination of Within and Between Estimators
392
12.6 The Fixed Effects Model in the Two-Period Case 395
12.7 The Fixed Effects Model with More Than Two Time Periods 397
12.8 The Perils of Fixed Effects Estimation 399
12.9 Fixed Effects or Random Effects?
12.10 A Wu-Hausman Test 403
12.11 Other Specification Tests and an Introduction to Chamberlain's
Approach 404
12.12 Readings 408
13. Discrete and Limited Dependent Variable Models 412
13.1 Types of Discrete Choice Models 412
13.2 The Linear Probability Model 414
13.3 Example: A Simple Descriptive Model of Union Participation 415
13.4 Formulating a Probability Model 418
13.5 The Probit 419
13.6 The Logit 424
13.7 Misspecification in Binary Dependent Models 426
13.8 Extensions to the Basic Model: Grouped Data 432
13.9 Ordered Probit 434
13.10 Tobit Models 436
13.11 Two Possible Solutions 441
13.12 Treatment Effects and Two-Step Methods 446
13.13 Readings 452
Appendix A
A.1 Vectors 455
A.2 Matrices 459
Appendix B
B.1 Random Variables and Probability Distributions 485
B.2 The Univariate Normal Probability Distribution 486
B.3 Bivariate Distributions 487
B.4 Relations between the Normal, x2, t, and F Distributions 489
B.5 Expectations in Bivariate Distributions 490
B.6 Multivariate Densities 490
B.7 Multivariate Normal pdf 492
B.8 Distributions of Quadratic Forms 493
B.9 Independence of Quadratic Forms 495
B.10 Independence of a Quadratic Form and a Linear Function 496
Appendix C 497
Appendix D 499
Index 521