Economics 140A
Winter 2015
Jones/White
Homework 3
Note: In this assignment, CPS data refers to the file cps_march_2014.wf1
1.
a. Find the formula for var(1 2 ).
b. Find the formula for var(1 1 + 2 2 )
Fiona Jiayuan Li
Homework 4
Econ 140A
11/12/2014
series male = 1- Fe
ls wsal_val c ed age age^2 fe black male*black fe*ed black*ed male*black*ed
Dependent
Variable:
WSAL_VAL
Method: Least
Squares
Date
Earnings and Height
You will need the dataset Earnings and Height, which contains data on earnings, height, and other
characteristics of a random sample of U.S. workers. In this exercise, you will inv
Economics 140A
Winter 2015
Jones/White
Final
Answer all 6 questions. Each question is worth 15 points, although some questions are easier
than others. Be sure to show your work for each question.
Writ
Economics 140A
Winter 2015
Jones/White
Final
Answer all 6 questions. Each question is worth 15 points, although some questions are easier
than others. Be sure to show your work for each question.
Writ
Economics 140A
Winter 2015
Jones/White
Quiz 2
Answer all 4 questions. Each question is worth 15 points, although some questions are easier
than others. Be sure to show your work for each question.
Wri
11/18/2014
Temperature in 2050
Plugsinto
Variable
C
YEAR
R-squared
Adjusted R-squared
S.E. of regression
Sum squared resid
Log likelihood
F-statistic
Prob(F-statistic)
Copyright Dick Startz
Variable
C
Economics 140A
Winter 2015
Jones/White
Quiz 2
Answer all 4 questions. Each question is worth 15 points, although some questions are easier
than others. Be sure to show your work for each question.
Wri
Economics 140A
Winter 2015
Jones/White
Quiz 1
Answer all 4 questions. Each question is worth 15 points, although some questions are easier
than others. Be sure to show your work for each question.
Wri
Economics 140A
Fall 2014
Jones/White
Quiz 1
Answer all 4 questions. Each question is worth 15 points, although some questions are easier
than others. Be sure to show your work for each question.
Write
Economics 140A
Winter 2015
Jones/White
Homework 6
Open up the workfile called HW6_Data. Were going to try estimating some supply and
demand curves. Suppose the system is
= 3 2 +
= 3 + + 3 +
(deman
Economics 140A
Winter 2015
Jones/White
Homework 4
Use our CPS data for this homework.
Consider the regression
= 0 + 1 + 2 + 3 2 + 4 + 5 + 6
+ 7 + 8 + 9
1. Give point estimates for salaries for the
11/21/2014
Goals
What happens when error terms are
correlated with one another?
Quasi-differencing and Cochrane-Orcutt.
Testing for serial correlation.
Lagged dependent variables and serial
correl
11/25/2014
Goals
Individual fixed effects
Control for unobservables at individual level
Panel data
Fixed Effects and
Difference-in-Differences
Difference-in-differences
Control for unobservables
Economics 140A
Time Series Project
The US Bureau of the Census has asked you to analyze data on consumer expenditure to help
forecast the aggregate demand for certain goods and services. You are given
9/5/2014
Introduction to Econometrics
Economics 140A
Instructor: Professor Dick Startz
Office NH 3038, T. 3:30-4:30 and by appt.
Introduction to Econometrics
Economics 140A
TAs:
Christine Braun
Aust
10/9/2014
Goals
Idea of estimator as a random variable.
Sampled over repeated draws.
Review/introduce expected value, variance,
covariance
Sample Mean and Related Issues
Rules from mathematical st
10/9/2014
Goals
Interpret regression coefficient as marginal
effect.
Error terms versus residuals.
Derive least squares estimator.
Simple Regression
Copyright Dick Startz
1
What is the MC and FC of
10/14/2014
Goals
Derive distribution of regression coeffficient.
Expected value, variance, normal distribution
Regression continued
Copyright Dick Startz
Which assumptions are needed for which
resu
10/28/2014
Goals
Extend simple regression to right hand side
variables.
Multicollinearity.
t-tests involving more than one coefficient.
F-tests involving more than one restriction.
Multiple Regres
11/6/2014
Goals
Omitted variable.
Correlated with included variables or not.
Theils misspecification theorem.
Misspecification
Included extraneous variable.
Correlated with error or not.
Copyrigh
11/4/2014
Goals
Dummy (0/1) variables.
Interpretation.
Multiple ways of writing.
Dummy variable trap.
Multiple categories.
Dummy variables and functional
forms
Functional forms
Logs
Power seri
9/5/2014
Goals
Individual fixed effects
Control for unobservables at individual level
Panel data
Fixed Effects and
Difference-in-Differences
Difference-in-differences
Control for unobservables at
11/21/2014
Goals
What happens when error terms are
correlated with one another?
Quasi-differencing and Cochrane-Orcutt.
Testing for serial correlation.
Lagged dependent variables and serial
correl
9/5/2014
Goals
Linear Probability Model
Probit Regression
Limited Dependent Variables
Questions to be answered
What traits get you into law school?
Who tends to have extramarital affairs?
Binary
11/13/2014
Goals
What happens when error variances differ
across observations?
Generalized least squares (GLS).
Heteroskedasticity
Weighted least squares (WLS).
Testing for heteroskedasticity.
Ro