Chapter 6: Linear Regression with Multiple Regressors
Multiple Choice for the Web
1)
In the multiple regression model, the adjusted R2, R 2
a.
b.
c.
d.
2)
cannot be negative.
will never be greater than the regression R2.
equals the square of the correlati
ECN 140/Winter 06
Econometrics
ASSIGNMENT 3
100 POINTS TOTAL
DUE: by Tuesday, March 14, 3:20 p.m.
*IMPORTANT REMINDER: LATE ASSIGNMENTS CANNOT BE ACCEPTED NO EXCEPTIONS*
Note: Apart from Questions 4, the rest of the questions are computer-assisted assignm
Chapter 1: Economic Questions and Data
Multiple Choice for Web
1)
Analyzing the behavior of unemployment rates across U.S. states in March of 2010 is an
example of using
a.
b.
c.
d.
2)
Studying inflation in the United States from 1970 to 2010 is an exampl
Suppose the total benet derived from a given decision, Q, is B (Q) =
1
20Q 2 Q2 and the corresponding total cost is C (Q) = 10 + Q2 .
a. Calculate total benet, marginal benet, total cost and marginal costs
for Q=2 and Q=10
b. What level of Q maximizes tot
CHAPTER 1
TEACHING NOTES You have substantial latitude about what to emphasize in Chapter 1. I find it useful to talk about the economics of crime example (Example 1.1) and the wage example (Example 1.2) so that students see, at the outset, that econometr
Intensifying Course Empirische Wirtschaftsforschung
Winter Term 2010/11
Problem Set III Model Specication (Part I)
Exercise III.1.) For the population of rms in the chemical industry, let rd denote
annual expenditures on research and development, and let
Chapter 3: Review of Statistics
Multiple Choice for the Web
1)
An estimator Y of the population value Y is consistent if
p
a. Y Y .
b. its mean square error is the smallest possible.
c. Y is normally distributed.
p
d.
2)
A type II error is
a.
b.
c.
d.
3)
ECN 140-winter 2006
Econometrics
MIDTERM
NAME: 100 POINTS TOTAL Time: 1 hour and 20 minutes Date: Tuesday, Feb 21, 2006
INSTRUCTIONS: (1) Please write your answer in the blue book. (2) ABSOLUTELY NO COPYING. Transgressors will be reported to the relevant
PART ONE
Solutions to Exercises
Free download at clcqtkdk50ftu.tk
Chapter 2
Review of Probability
Solutions to Exercises
1.
(a) Probability distribution function for Y
Outcome
(number of heads)
probability
Y=0
Y=1
Y=2
0.25
0.50
0.25
(b) Cumulative probabi
Chapter 5: Regression with a Single Regressor: Hypothesis Tests and Confidence
Intervals
Multiple Choice for the Web
1)
The t-statistic is calculated by dividing
a. the OLS estimator by its standard error.
b. the slope by the standard deviation of the exp
KTEE 310
ECONOMETRICS
THE SIMPLE REGRESSION MODEL
Chap 4 S & W
Faculty of International Economics
1
Outputandlaboruse
2
Outputandlaboruse
Thescatterdiagramshowsoutputqplottedagainstlaboruselforasampleof24
observations
1
Outputandlaboruse
Economic theory (
Chapter 8: Nonlinear Regression Functions
Multiple Choice for the Web
1)
The interpretation of the slope coefficient in the model ln(Yi ) 0 1 ln( X i ) ui is as
follows: a
a.
b.
c.
d.
2)
1% change in X is associated with a 1 % change in Y.
change in X by
Chapter 7: Hypothesis Tests and Confidence Intervals in Multiple Regression
Multiple Choice for the Web
1)
When testing joint hypothesis, you should
a. use t-statistics for each hypothesis and reject the null hypothesis is all of the
restrictions fail
b.
KTEE309ECONOMETRICS
STATISTICALINFERENCE
Chap5&7S&W
Faculty of International Economics
1
TESTINGAHYPOTHESISRELATINGTOAREGRESSIONCOEFFICIENT
Model:
Y = 1 + 2X + u
Nullhypothesis:
H 0 : 2 20
Alternativehypothesis:
H 1 : 2 20
Wewillsupposethatwehavethestanda
MC
300
270
240
Price
210
180
150
120
90
60
MR
30
D
0
0
5
10
15
20
25
30
35
Quantity
1. The profit-maximizing price for a perfectly competitive firm would be_
2. The total social surplus under monopoly would be _
3. The deadweight loss under monopoly would
Chapter 2
2.1 These outcomes are random because they are not known with certainty until they
actually occur. You do not know with certainty the gender of the next person you will
meet, the time that it will take to commute to school, and so forth.
2.2 If
Chapter 2: Review of Probability
Multiple Choice for Web
1)
The expected value of a discrete random variable
a.
b.
c.
d.
2)
For a normal distribution, the skewness and kurtosis measures are as follows:
a.
b.
c.
d.
3)
is the outcome that is most likely to
CHAPTER
8
Exercise Solutions
177
Chapter 8, Exercise Solutions, Principles of Econometrics, 3e
EXERCISE 8.1
When i2 = 2
N
( xi x )
i =1
2
i2
2
N
( xi x )
i =1
2
N
=
( xi x )
i =1
2
2
2
N
( xi x )
i =1
2
N
=
2 ( xi x )
2
i =1
2
N
( xi x )
i =
CHAPTER 3
SOLUTIONS TO PROBLEMS 3.2 (i) hsperc is defined so that the smaller it is, the lower the students standing in high school. Everything else equal, the worse the students standing in high school, the lower is his/her expected college GPA. (ii) Jus
A monopolist faces inverse demand P=400-4Q, and has constant marginal cost MC=80. If this
monopolist changes from a policy of uniform pricing to a policy of first-degree price discrimination, how
much will the deadweight loss decrease by?
P=400-4QTR=P*Q=4
In a two-player, one-shot simultaneous-move game each player can choose strategy A or strategy B. If
both players choose strategy A, each earns a payoff of $500. If both players choose strategy B, each earns
a payoff of $100. If player 1 chooses strategy
Consider a perfectly competitive market with market supply Qs = 1000+
P and market demand Qd = 5000 P . Suppose the government imposes
an excise tax of $1000 per unit on this market. What is sum of consumer
surplus plus producer surplus after the governme
Suppose the cost function for a rm is given by C (Q) = 100+ Q2 and the
xed costs are all sunk. If the rm sells output in a perfectly competitive
market and other rms in the industry sell output at a price of $10, what
level of output should the rm produce