Economics 154-257
Winter Term
V. Zinde-Walsh
Assignment 2, 2013
answers
1. A drug manufacturer conducted an experiment to evaluate the eectiveness of a new anti-depressant drug. Ten depressed patients were given a test to
measure levels of depression befo
Economics Statistics-Honours
Economics 257
Mid-term test
March 13, 2013
Answers
V.Zinde-Walsh
Question 1.
In World Values Survey in 2005 people in dierent countries answered a
question whether they were very happy. In Venezuela 55 out of 100 answered
"yes
Economics 154-257
Winter Term
V. Zinde-Walsh
Assignment 2
Due Feb19, 2014
1. A drug manufacturer conducted an experiment to evaluate the eectiveness of a new anti-depressant drug. Ten depressed patients were given a test to
measure levels of depression be
Economics 154-257
Winter Term
V. Zinde-Walsh
Assignment 2, 2013
answers
1. A drug manufacturer conducted an experiment to evaluate the eectiveness of a new anti-depressant drug. Ten depressed patients were given a test to
measure levels of depression befo
Economics 154-257
Assignment 1 (answers)
V.Zinde-Walsh
1. On a multiple-choice exam each of the 30 questions has 3 answers listed,
one of which is correct. Each correct answer is worth one mark, no marks
deducted for incorrect answers.
(a) A student got 1
Economics 257
Assignment 3 on regression (answers)
V.Zinde-Walsh
1. CEO salary and return on equity.
The following table provides 7 observations of salaries of CEO (in thousands of dollars) and the average return on equity of their rm for the previous
thr
Economics 257 Midterm Exam
1. The textbook provides two seemingly dierent definitions of the independence of two
events, A and B. They are:
(a) Two events A and B are independent if and only if P (A|B) = P (A) (for P (B) > 0);
equivalently P (B|A) = P (B)
Linear Regression
Regression Statistics
R
0.57912938
R Square
0.33539084
Adjusted R Square
0.3170568
S
0.48099969
Total number of observation
150
lnwage = 0.2504 + 0.0432 * age + 0.0495 * grade - 0.0005 * exp2 + 0.1369 * married
ANOVA
d.f.
SS
4 16.9294351
Economics Statistics-Honours
Economics 257
Mid-term test
March 16, 2015
Answers
Value of each question in parentheses; total for exam 30.
V.Zinde-Walsh
Question 1. To examine whether the amount of sunshine (X hours in
a week) is a good predictor of the we
Economics 154-257
Winter Term
V. Zinde-Walsh
Simple Linear Regression Tutorial and mid-term
practice questions.
1. Consumption function.
Y denotes consumption, X - income.
Y = 0 + 1X + "
The estimated model is for a sample of size n = 25; where X = 61:92;
Economic
Statistics
J.W. Galbraith
McGill University
Copyright: J.W. Galbraith 2007-2013
Version of: September 2013
Typeset on: 9. 9. 2013
Preface
I hope that these draft chapters are useful. Comments on this draft, particularly
any errors that you might
Economics 257
October 4, 2016
R. Davidson
Practice for the Midterm
1. Show that
P (A B C) = P (A) + P (B) + P (C)
P (A B) P (A C) P (B C)
+ P (A B C).
2. There are three plants that produce a given screw: A, B, and C. Plant A produces
twice as many screw
Ch. 5-Online Notes-Probability
Priori-through purely theoretical reasoning
Posteriori-through actual observations of random events
A random experiment is an experiment for which the outcome is not known
with certainty. (Note that, randomness requires on
Economics 257
Winter Term
V. Zinde-Walsh
Topic 5. Multiple linear regression.
Simple regression admits of one explanatory factor only; it is too simplistic.
For example, one may be interested in the eect of education on wage, and could
try a regression to
Economics 154-257
V. Zinde-Walsh
Topic 1. Hypotheses testing.
A few problems.
1. In a sample of 400 adults and 600 teenagers 100 adults
and 300 teenagers liked a TV program. Construct a 95%
CI for the dierence in proportions.
The sampling distribution of
McGill University
Department of Economics
Economics 257D: Economic Statistics
Assignment 1: descriptive statistics
J. W. Galbraith
1. Obtain data on the nancial stress index and the 10-year constant-maturity U.S.
treasury bill rate (daily data) from the w
M c G i l l U niversity
D epartment of E conomics
E conomics 2 57D: E conomic S tatistics
A ssignment 3: Continuous distributions, including the Normal
f fx)
These q uestions are i n most cases t aken from Newbold et al.
30. 10. 2013
1 . A r andom variabl
Economics 154-257
V. Zinde-Walsh
Topic 1. Hypotheses testing.
Introduction.
So far we have estimated parameters of some distributions:
and 2 for the normal, N ( ; 2); by X and
s2; p (proportion) for the Bernoulli by p^; estimating these
parameters provide
Economics 154-257
Winter Term
V. Zinde-Walsh
Topic 3. Analysis of Variance (ANOVA).
Analysis of variance extends comparing the means of two populations to
comparing means in several populations.
ANOVA is used when there is a categorical variable that dete
Economics 154-257
Winter Term
V. Zinde-Walsh
Topic 2. Goodness of t and nonparametric
tests.
Goodness of t tests are designed to establish distributional properties of
the data: such as do they come from a particular distribution: e.g. uniform,
Poisson, n
McGill University
Department of Economics
Economics 257D: Economic Statistics
Assignment 2: Probability
John W. Galbraith
1. An equity analyst claims to be able to predict which of a set of stocks will gain
the most in the coming year. He is given a list
it ° December 2007
g l Mid-Year Examination
Department of Economics
Economics Statistics Honours
Econ 257D Section 001
Wednesday, December 12th, 2007
2:00 pm - 5:00 pm
Examiner: John W. Galbraith Assoc Examiner: Dhanoos Sutthiphisal
l8tudentName: l
McGill University
Department of Economics
Economics 154—257D
Mid-term examination
October 2014: Examiner: J. W. Galbraith
You have 1 hour and 20 minutes in which to complete this exam. If you ﬁnd any
question ambiguous, please explain the difficulty, make
McGill University
Department of Economics
Economics 257D
December examination, 2013
John W. Galbraith Associate Examiner: V. Zinde-Walsh
You have three hours in which to complete this exam. If you ﬁnd any question
ambiguous, explain the difﬁculty, make a
McGill cfw_Jniversit;r
Department of Economics
Economics 257D
Midterm examination, fall 2013
John V'/. Galbraith
Associate Examiner:
V. Zinde-Walsh
You have 80 minutes in which to complete this exam. If you find any question
ambiguous, explain the difficu
McGill University
Department of Economics
Economics 257D: Economic Statistics
Assignment 1: descriptive statistics
J. W. Galbraith
1. Obtain data on the nancial stress index and the 10-year constant-maturity
U.S. treasury bill rate from the web site of th