Ec142, Spring 2012
Professor Bryan Graham
Review Sheet 2
This review sheet is designed to assist you in your exam preparations. I suggest preparing written answers
to each question. In the exam you may bring in a single 8.5 x 11 sheet of notes. No calcula
Econ C142 Applied Econometrics and Public Policy UC Berkeley Department of Economics
Spring 2008 Andrea Weber
Applied Exercise #1
Due Thursday 02/21/08
The focus of this exercise is on the relationship between educational attainment and earnin
University of California, Berkeley Department of Economics
Prof. Andrea Weber Spring 2008
Applied Exercise #3
Due Thursday 03/20/08
This exercise examines the return to education on wages in an instrumental variables framework, using college pr
Economics 142
Problem Set #3
1. Consider a regression model of the relationship between
explanatory variables
xi : yi = x0i + ui .
Let
coecients, which are assumed to satisfy the condition:
where
N
1
N
PN
i=1
yi ,
xi
PN
i=1
1
Ng
Ng
P
xi
x
=
1
N
PN
i=1
=0
Economics 142
Problem Set #5
Due: Thursday October 13
Part 1: The goal of this part of the problem set is to analyze the eect of eld
of degree on the gender pay gap for younger workers with a bachelor's degree
in the 2010 American Community Survey (ACS).
ECON 142, Fall 2016
PS 1
Question 1
For n = 30, p = 0.05:
a) The mean estimate of p = 0.0483
b) The mean estimate of standard dev. = 0.1934065
c) The mean estimate of coverage rate = 0.708
For n = 30, p = 0.25:
a) The mean estimate of p = 0.2526
b) The me
ECON 142, PS7
1.
2. a) We select xs and ys with bandwiths=10 and fit the following local linear model for each y:
And we get the following estimates:
i)
For y = entercollege,
hence,
ii)
For y = hsgpa,
hence,
iii)
For y = hidad
hence,
iv)
For y = himom
hen
1. (a) Run firststage models for each period, see codes below
(b) Run reduced form models for each period, see codes below
(c)
 Run OLS for each period, see codes below

First stage models are in question 1(a)
Reduced form models are in question 1(b)
R
Economics 142
Problem Set Number 2
1. Consider a sample of size N of observations on Yi . Assume that E[Yi ] = ,
and E[(Yi )2 ] = 2 .
P
a) Consider the sample mean Y = N1 i Yi . Show that
E[(Y )2 ] = 2 /N.
b) Consider the sum:
D=
1 X
(Yi Y )2
N i
Using th
Economics 142
Problem Set #4
1. Suppose we see a sample of size
N
on two variables,
xi
and
yi .
Dene
the correlation coecient as
xy =
where
yi
x
and
y
1
N
1
N
PN
y)(xi x
)
1/2
P
N
2 1
2
(y
y
)
(x
x
)
i=1 i
i=1 i
N
i=1 (yi
PN
xi and yi . Consider the reg
* Here only displays some key codes, the whole rcode is submitted in a separate r file.
Part 1
1. Create dummy variables for Hispanic/nonHispanic (any race):
D1 WhitenonHispanic
D2 BlacknonHispanic
D3 AsiannonHispanic
D4 OthernonHispanic
Di = 1
Key Problem set 2
1)
Provide an example of:
(a) Goods that are (i) private, (ii) public, (iii) nonexcludable and rival, (iv) excludable and nonrival.
( i) Most goods you buya cup of coffee, a car, a haircutare private.
( ii) The climate, wilderness protec
EEP1/ECON3
Fall 2016
Section 3
GSI: Xi Lu
Section notes 4: Social Welfare Measures
Consumer Surplus, Equivalent Variation & Compensating Variation
1
Three Money Measures
1.1
Changes in Consumer Surplus
1. Suppose the electricity price is P0 for each unit
. WM am 3242 M
. 0L3.3M.YVLQ,., amlrldwkw m 22224? . Q5 i"w C922
2
i
2 . Si. is 2L: mom 22:02 r w
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C19 0 T "137;,
2222 .2' 1220 . . . 12 a 11
. g 3%: \V 0 W1A( V111")? Misha/ff fit/liq C (J ":2 (2": T cfw_I g:
109.1
m (xx/cfw_1:7, n, 1! w.
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EEP1/ECON3
Fall 2016
Section 6
GSI: Xi Lu
Section 6: Stated Preferences, Theory of the Firm, Pollution Controls
1
Stated Preferences Review
We saw in class two types of non market valuation methods: revealed preference methods
(observe) and stated prefer
University of California, Berkeley
Department of Economics
Prof. Ken Chay
Fall Semester, 2005
ECON 142
SKETCH OF SOLUTIONS FOR APPLIED EXERCISE #2
Question 1:
a.
Below are the scatter plots of hourly wages and logwages on the yaxes and education on the
Economics 142 Problem Set #1
Due Thursday Sept. 1 in class
Note: It is recommended that you use the R programming language for assignments in
this class. You are welcome to use other programming languages (e.g., Matlab and
Python) or software packages (e.
Economics 142
Problem Set 6
Due Thursday October 20
The data set welfare.csv contains 5,480 observations for people in an unnamed welfare experiment that created incentives for full time work. The experiment had a very strong incentive for people in the t
2 (b)
Corresponding to part (a), the coefficient of immigrant status derived from the
omitted variable formula is:
where, for females
= OLS estimate of immigrant coefficient from model (5) = 0.0101
= OLS estimate of education coefficient fro
Practice Problem: Ftest and OVB Econ 142 Spring 2008
Raymundo M. CamposVazquez February 20, 2008
Contents
1 Problem 1: Ftests 1
1
Problem 1: Ftests
You want to estimate the causal eect of smoking on wages. You estimate the following regressio
USING STATA ON THE SOCRATES SERVER
What Computer Can I Use? You can access Stata through Socrates using just about any computer with an internet Connection. Starting this semester, Socrates server is only available ON CAMPUS using SSH software. The f
Stata Cheat Sheet 0. If you are using a computer in Wheeler 212, use the generic Econ 142 username and password to login. The username and password are in the "Using Stata on the Socrates Server.doc" document that is posted on Bspace. 1. Write a prog
EEP142 Final Prof. Sofia VillasVoas Fukumi Watanabe SID # 19744392 Part A 1. False Miss Youngs husband cannot raise the price because if he raises the price, new rivals may enter the market. Then he has to lower the price again to drive these new fi
Dear EEP 142  all: Please find below the optional midterm exam it has two pages, 5 questions total. It is a take home and is due Thursday, March 20th 2008. Do not work with others. If I notice that you have worked together you will fail this exam. P