
Using Stata for Principles of Econometrics
Lee C. Adkins, R. Carter hill
Table of contents
Chapter 1 - Introducing Stata
- 1.1 Starting Stata
- 1.2 The opening display
- 1.3 Exiting Stata
- 1.4 Stata data files for Principles of Econometrics
- 1.4.1 A working directory
- 1.4.2 Data definition files
- 1.5 Opening Stata data files
- 1.5.1 The use command
- 1.5.2 Using the toolbar
- 1.5.3 Using files on the Internet
- 1.5.4 Locating POE files on the Internet
- 1.6 The variables window
- 1.7 Describing the data and obtaining summary statistics
- 1.8 The Stata help system
- 1.8.1 Using keyword search
- 1.8.2 Using command search
- 1.8.3 Opening a dialog box
- 1.9 Stata commands syntax
- 1.9.1 Syntax of summarize
- 1.9.2 Learning syntax using the review window
- 1.10 Saving your work
- 1.10.1 Copying and pasting
- 1.10.2 Using a log file
- 1.10.3 Viewing a log file
- 1.10.4 Translating a log file to a text file
- 1.10.5 Using Stata commands for log files
- 1.11 Using the data browser
- 1.12 Using Stata graphics
- 1.12.1 Histograms
- 1.12.2 Scatter diagrams
- 1.13 Using Stata do-files
- 1.14 Creating and managing variables
- 1.14.1 Creating (generating) new variables
- 1.14.2 Using the expression builder
- 1.14.3 Dropping or renaming a variable
- 1.14.4 Using arithmetic operators
- 1.14.5 Using Stata math functions
- 1.15 Using Stata density functions
- 1.15.1 Cumulative distribution functions
- 1.15.2 Inverse cumulative distribution functions
- 1.16 Using and displaying scalars
- 1.16.1 Example of standard normal cdf
- 1.16.2 Example of t-distribution tail-cdf
- 1.16.3 Example of computing percentile of the standard normal
- 1.16.4 Example of computing percentile of the t-distribution
- 1.17 A scalar dialog box
Key terms
Chapter 1 Do-file
Chapter 2 - Simple linear regression
- 2.1 The flood expenditure data
- 2.1.1 Starting a new problem
- 2.1.2 Starting a log file
- 2.1.3 Opening a Stata data file
- 2.1.4 Browsing and listing the data
- 2.2 Computing summary statistics
- 2.3 Creating a scatter diagram
- 2.4 Regression
- 2.4.1 Fitted values and residuals
- 2.4.2 Computing an elasticity
- 2.4.3 Plotting the fitted regression line
- 2.4.4 Estimating the variance of the error term
- 2.4.5 Viewing estimated variances and covariances
- 2.5 Using Stata to obtain predicted values
- 2.6 Saving the Stata data file and ending the session
Key Terms
Chapter 2 Do-file
Chapter 3 - Interval Estimation and Hypotheses Testing
- 3.1 Interval estimates
- 3.1.1 Critical values from the t-distribution
- 3.1.2 Creating an interval estimate
- 3.2 Hypothesis tests
- 3.2.1 Right tail test of significance
- 3.2.2 Right tail test of an economic hypothesis
- 3.2.3 Left tail test of an economic hypothesis
- 3.2.4 Two tail test of an economic hypothesis
- 3.3 P-values
- 3.3.1 P-value test of a right tail test
- 3.3.2 P-value test of a left tail test
- 3.3.3 P-value test of a two tail test
- 3.3.4 P-values in Stata output
- Key terms
Chapter 3 Do-file
Chapter 4 - Prediction, Goodness-of-Fit and Modeling Issues
- 4.1 Least squares prediction
- 4.1.1 Editing the data
- 4.1.2 Estimate the regression and obtain post-estimation results
- 4.1.3 Creating the prediction interval
- 4.2 Measuring goodness-of-fit
- 4.2.1 Correlations and R2
- 4.3 The effects of scaling and transforming the data
- 4.3.1 The reciprocal functional form
- 4.3.2 Editing graphs
- 4.3.3 The linear-log model
- 4.4 Analyzing the residuals
- 4.4.1 The Jarque-Bera test
- 4.4.2 Chi-square distribution critical values
- 4.4.3 Chi-square distribution p-values
- 4.5 Another empirical example
- 4.5.1 Examining the data
- 4.5.2 Estimating and checking the linear relationship
- 4.5.3 Estimating and checking a cubic equation
- 4.6 Estimating a log-linear wage equation
- 4.6.1 The log-linear model
- 4.6.2 Calculating wage predictions
- 4.6.3 Constructing wage plots
- 4.6.4 Generalized R2
- 4.6.5 Prediction intervals in the log-linear model
- Key Terms
Chapter 4 Do-file
Chapter 5 - Multiple Linear Regression
- 5.1 Big Andy’s burger barn
- 5.2 Prediction
- 5.3 Sampling precision
- 5.4 Confidence intervals
- 5.5 Hypothesis tests
- 5.6 Goodness-of-fit
Key Terms
Chapter 5: Do-file
Chapter 6 - Further Inference in the Multiple Regression Model
- 6.1 The F-test
- 6.2 Testing the significance of the model
- 6.3 An extended model
- 6.4 Testing some economic hypotheses
- 6.4.1 Significance of advertising
- 6.4.2 Optimal advertising
- 6.5 Nonsample information
- 6.6 Model specification
- 6.6.1 Omitted variables
- 6.6.2 Irrelevant variables
- 6.6.3 Choosing the model
- 6.7 Poor data, collinearity and insignificance
Key Terms
Chapter 6 Do-File
Chapter 7 - Nonlinear Relationships
- 7.1 Nonlinear Relationships
- 7.1.1 Summarize data and estimate regression
- 7.1.2 Calculate marginal effect
- 7.1.3 Plotting wage-experience profile
- 7.2 Dummy variables
- 7.2.1 Creating dummy variables
- 7.2.2 Using tabulate
- 7.2.3 Estimating a dummy variable regression
- 7.2.4 Testing the significance of the dummy variables
- 7.2.5 Further calculations
- 7.3 Applying dummy variables
- 7.3.1 Interactions between qualitative factors
- 7.3.2 Adding regional dummies
- 7.3.3 Testing the equivalence of two regressions
- 7.3.4 Estimating separate regressions
- 7.4 Interactions between continuous variables
- 7.5 Dummy variables in log-linear models
Key Terms
Chapter 7 Do-file
Chapter 8 - Heteroskedasticity
- 8.1 The nature of heteroskedasticity
- 8.2 Using the least squares estimator
- 8.3 The generalized least squares estimator
- 8.3.1 Transforming the model
- 8.3.2 Estimating the variance function
- 8.3.3 A Heteroskedastic partition
- 8.4 Detecting Heteroskedasticity
- 8.4.1 Residual plots
- 8.4.2 The Goldfeld-Quandt test
- 8.4.3 Testing the variance function
- 8.4.3a The White test
- Key Terms
Chapter 8 Do-file
Chapter 9 - Dynamic Models, Autocorrelation, and Forecasting
- 9.1 Lags in the error term: autocorrelation
- 9.2 Area response for sugar
- 9.3 Estimating an AR(1) model
- 9.3.1 Least squares and HAC standard errors
- 9.3.2 Nonlinear least squares
- 9.3.3 A more general model
- 9.4 Detecting autocorrelation
- 9.5 Autoregressive models
- 9.6 Finite distributed lags
- 9.7 Autoregressive distributed lag models
Appendix
Key Terms
Chapter 9 Do-file
Chapter 10 - Random Regressors and Moment Based Estimation
- 10.1 Least squares with simulated data
- 10.2 Instrumental variables estimation with simulated data
- 10.2.1 IV estimation in two steps
- 10.2.2 IV estimation in one step
- 10.2.3 IV estimation with surplus instruments
- 10.3 The Hausman test: simulated data
- 10.4 Testing for weak instruments: simulated Stata
- 10.5 Testing the validity of surplus instruments
- 10.6 Estimation using the Mroz data
- 10.6.1 Least squares regression
- 10.6.2 Two-stage least squares
- 10.6.3 Instrumental variables
- 10.6.4 Instrumental variables estimation with surplus instruments
- 10.7 Testing the endogeneity of education
- 10.8 Testing for weak instruments
- 10.9 Testing the validity of surplus instruments
Key Terms
Chapter 10 Do-file
Chapter 11 - Simultaneous Equations Models
- 11.1 Truffle supply and demand
- 11.2 Estimating the reduced form equations
- 11.3 2SLS estimates of truffle demand
- 11.4 2SLS estimates of truffle supply
- 11.5 Supply and demand of fish
- 11.6 Reduced forms for fish price and quantity
Chapter 12 - Nonstationary Time Series Data and Cointegration
- 12.1 Stationary and nonstationary data
- 12.2 Spurious regressions
- 12.3 Unit root tests for stationarity
- 12.4 Integration and cointegration
- 12.5 Engle-Granger test
Key Terms
Chapter 12 Do-file
Chapter 13 - An Introduction to Macroeconometrics: VEC and VAR Models
- 13.1 VEC and VAR models
- 13.2 Estimating a VEC model
- 13.3 Estimating a VAR
- 13.4 Impulse responses and variance decompositions
Key Terms
Chapter 13 Do-file
Chapter 14 - An Introduction to Financial Econometrics: Time-Varying Volatility and ARCH models
- 14.1 ARCH model and time-varying volatility
- 14.2 Testing, estimating, and forecasting
- 14.3 Extensions
14.3.1 GARCH
- 14.3.2 Threshold GARCH
- 14.3.3 GARCH-in-mean
- Key Terms
Chapter 14 Do-file
Chapter 15 - Panel Data models
- 15.1 Sets of regression equations
- 15.2 Seemingly unrelated regression
- 15.3 The fixed effects model
- 15.3.1 A dummy variable
- 15.3.2 The fixed effects estimator
- 15.3.3 The fixed effects estimator for a microeconometric panel
- 15.4 Random effects estimation
- 15.4.1 BreuschPagan test
- 15.4.2 Hausman test
- Key Terms
Chapter 15 Do-file
Chapter 16 - Qualitative and Limited Dependent Variable Models
- 16.1 Models with binary dependent variables
- 16.2 Multinomial logit
- 16.3 Conditional logit
- 16.3.1 Release 9: clogit
- 16.3.2 Release 10: asclogit
- 16.4 Ordered choice models
- 16.5 Models for cont data
- 16.6 Censored data models
- 16.6.1 Simulated data example
- 16.6.2 Mroz data example
- 16.7 Selection bias
Key Terms
Chapter 16 Do-file
Appendix A/ Review of Math Essentials
- A.1 Stata math and logical operators
- A.2 Math functions
- A.3 Extensions to generate operations
- A.4 The calculator
- A.5 Scientific notation
Key Terms
Appendix B/ Review of Probability
- B.1 Stata probability functions
- B.2 Binomial probability functions
- B.3 Normal probability calculations
- B.4 t-distribution probability calculations
- B.5 F-distribution probability calculations
- B.6 Chi-square distribution probability calculations
Key Terms
Appendix B Do-file
Appendix C/ Review of Statistical Inference
- C.1 Examining the hip data
- C.1.1 Constructing a histogram
- C.1.2 Obtaining summary statistics
- C.1.3 Estimating the population mean
- C.2 Using simulated data values
- C.3 The central limit theorem
- C.4 Interval estimation
- C.4.1 Using simulated data
- C.4.2 Using the hip data
- C.5 Testing the mean of a normal population
- C.5.1 Right rail test
- C.5.2 Two tail test
- C.6 Testing the variance of a normal population
- C.7 Testing the equality of two normal population means
- C.7.1 Population variances are equal
- C.7.2 Population variances are unequal
- C.8 Testing the equality of two normal population variances
- C.9 Testing normality
- C.10 Maximum likelihood estimation
Key Terms
Appendix C Do-file
Index
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