PAM 3100: First Preliminary Exam (09/27/2010)
In-Class
Professor Lovenheim
Instructions
PLEASE READ CAREFULLY before starting.
This test has a total of 100 points and has a total of 3 questions with sub-parts. The amount
each sub-part is worth is listed

Julie Melamud PAM 310 Homework #2 February 27, 2008
1. log(wage)= 0 + 1educ + 2exper + 3tenure log(wage)= 0.284 + 0.0920educ + 0.0041exper + 0.0221tenure b. Interpret estimated coefficients: Estimated 1- If we increase education by one unit and hold

PAM 3100: Second Preliminary Exam (11/8/2010)
In-Class
Professor Lovenheim
Instructions
PLEASE READ CAREFULLY before starting.
This test has a total of 100 points and has a total of 2 questions with sub-parts. The amount
each sub-part is worth is listed

PAM 3100 Homework 2 - SOLUTIONS
1. The Excel dataset HW2-1 located in Blackboard contains information on the duration of employment leave
and the amount of benefits received as a result of on-the-job injuries. You need to estimate the relationship
between

Panel Data Methods
PAM 3100
Professor Michael Lovenheim
Fall 2010
PAM 3100
Panel Data Methods
Panel Data Introduction
Thus far, we have dealt with cross sectional regressions, where
each data point is a unit of observation.
Often, we have data on repeated

PAM 3100: Multiple Regression Analysis
Fall 2010
Professor: Michael Lovenheim
Email: mfl55@cornell.edu
Office: 103 MVR Hall
Phone: 255-0705
Lectures: M, W 2:55-4:10
Location: 280 MVR Hall
Office Hours: M 11-12, W 1:30-2:30
TAs: James Cowan (jec295@cornell

Omitted Variables Bias
Charlie Gibbons
Economics 140
October 18, 2009
Outline
1 The problem
2 The bias
3 An example
4 Conclusion
The problem
Omitted variables bias is the biggest problem in econometrics.
Suppose that the true model of a process is
Yi = 0

STATA 10 Tutorial
by Manfred W. Keil
to Accompany
Introduction to Econometrics
by James H. Stock and Mark W. Watson
-1. STATA: INTRODUCTION
2
2. CROSS-SECTIONAL DATA
Interactive Use: Data Input and Simple Data Analysis
a) The Easy and Tedious Way: Manual

PAM 3100: Homework Assignment #1: ANSWER KEY (including code,
graphs)
Some general notes on this homework assignment:
Feel free to work in groups but write the homework up in your own words.
For this homework you DO NOT need to produce any Stata output

PAM 3100: Homework Assignment #1
Some general notes on this homework assignment:
Feel free to work in groups but write the homework up in your own words.
For this homework you DO NOT need to produce any Stata output (e.g., screen prints, etc). It suces

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PAM 3100 Homework 1
Name: _Section:_Grade:_/80
1. Here are 21 observations from a dataset of liver disease deaths per 100,000 people (Y) and the liters of wine
consumed per capita (X).
(1)
(2

PAM3100 Spring 2015 Prelim #2
1. Table 5 below comes from Prof Kleiners paper titled Do Strikes Kill? Evidence from New York State?
The research investigates the effects of nurses strikes on the mortality rate of patients that are admitted to
hospitals du

PAM 3100 Prelim #1-SOLUTIONS
1. Please see the attached regression output.
a) What is the interpretation of the regression intercept? Does the intercept have a useful interpretation?
Please explain? (2)
It is the predicted/expected law school rank that st

Documentation for Guns Data
Growth is a balanced panel of data on 50 US states, plus the District of Columbia (for a
total of 51 states), by year for 1977 1999. Each observation is a given state in a given
year. There are a total of 51 states 23 years = 1

PAM 3100: Homework 7
Question 1
Go to the list of datasets located on the website http:/wps.aw.com/aw_stock_ie_3/178/45691/11696965.cw/index.html .
Right-click the one named Guns Data (Stata dataset), save it somewhere you can access it and then open it i

PAM 3100: Homework Assignment #6
Question One
A: Interactions between continuous and discrete variables
Suppose we are interested in the eects of college on wages, but think that this might depend on someones age (e.g., it becomes
more valuable later). In

PAM 3100: Homework 5
Question 1
A school district undertakes an experiment to estimate the eect of class size
on test scores in second grade classes. The district assigns 50% of its previous
years rst graders to small second-grade classes (18 students per

PAM 3100: Homework 4
Question 1
Refer to the estimated regressions on the rst slide of my lecture11_slides (on
blackboard). These are based on a dataset that includes information on 4000
full-time full-year workers. The highest educational achievement for

PAM 3100: Homework 3 Answer Key
February 21, 2013
NOTE: For this homework you do not need to submit a do-le or a log-output le. For the questions that require that you
use Stata, you can just report your estimates in the main body of your answers. E.g., t

PAM 3100: Homework 3
NOTE: For this homework you do not need to submit a do-le or a log-output le. For the questions that require that you
use Stata, you can just report your estimates in the main body of your answers. E.g., the estimate of b0 is 10.1, et