2013 Spring Econ 3210 Prelim 1 solution
1
Question 1
Suppose you are a health economist, studying the effect of drinking on workers health and
income. Using data on a sizable number of individuals, say five thousands, you find that those
who drink three g
5. Problem #11, BHM Chapter 11
A scientific expedition to Death Valley is being organized. In addition to the scientific
equipment, the expedition also has to carry a stock of spare parts, which are likely to fail under
the extreme heat conditions prevail
Section 3
TA: Xingtong Zhang & Yu She
Feb 19, 2016
Exercise 1. Find and interpret the coefficient of the determination for the regression of the
percentage change in the Dow Jones index in a year based on the percentage change in the
index over the first
Econ 3120 Applied Econometrics
Lecture 5 Introduction to Regression
Outcomes
Application of OLS
2 / 22
Outcomes
Goodness of Fit
Unbiasedness of OLS
Claire S.H. Lim
Application of OLS
Goodness of Fit
Variance of OLS
Econ 3120: Applied Econometrics
Unbiased
Section 5
TA: Xingtong Zhang & Yu She
Mar 4, 2016
Exercise 1. Below is the summary of variable x and the result of regressing y on x in STATA.
Figure 1: sum x
Figure 2: reg y x
(1) Please fill out the blanks in the table above.
\y) and y.
(2) Calculate co
Cheat Sheet for the Exam:
Econometric Methods
1
A-, B- and C-Assumptions
Assumption A1: (The true model) The econometric model does not lack any
relevant exogenous variables and the exogenous variables used are not
irrelevant.
Assumption A2 (Linear in par
Section 5 Solution
Xingtong and Yu
March 2016
1
Q1
Notice here that the number of obs is 13 which is very small. So for P value and
95% CI you need to use to t table instead of z table. In the exam, this situation
will not show up.
If we stick to z table
Review of Mean Estimation
Consider
Suppose we have
2 / 10
n
Yi i.i.d.N (, 2 )
i=1
Yi . What can we estimate?
Claire S.H. Lim
Econ 3120: Applied Econometrics
Review of Mean Estimation
n
Y
=
1
Yi
n i=1
E(Y )
=
E(
=
1
E(Yi )
n i=1
n
1
Yi )
n i=1
n
=
3 / 10
C
Problem Set 2
Economics 3120
Spring 2016
Claire S.H. Lim
Due Friday, March 4, in sections.
Attach printouts of your Stata do file and log file for computer exercises.
1. Using data from 1988 for houses sold in Andover, Massachusetts, from Kiel and McClain
ECON 3120: APPLIED ECONOMETRICS
SPRING 2016
Department of Economics, Cornell University
TR 1:25-2:40 p.m. Malott Hall 228 (Bache Auditorium)
(Note: There will be no class on February 18.)
Instructor:
Office:
E-mail:
Office Hours:
Prof. Claire (Seon Hye) L
STUDENT SOLUTIONS MANUAL
Jeffrey M. Wooldridge
Introductory Econometrics: A Modern Approach, 4e
CONTENTS
Preface
iv
Chapter 1
Introduction
1
Chapter 2
The Simple Regression Model
3
Chapter 3
Multiple Regression Analysis: Estimation
9
Chapter 4
Multiple Re