Name:
Recitation:
Andrew id:
Regression Analysis 70-208
Prof. Maria Marta Ferreyra
Spring 2013
First Midterm Exam Answer Key
Total Number of Points = 105 Points
Total Time = 50 minutes
Note:
1. This midterm includes TWO (2) questions. To facilitate your w

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Quiz 7
Intermediate Microeconomics 73-230
July 21, 2015
Problem 1
Suppose labor and capital are both used to produce output, and these two inputs are neither perfect substitutes nor perfect complements. In the long run, if the wage rate rises while the re

Due: June 30, 2015, 8:00 pm
Quiz 1
Intermediate Microeconomics 73-230
A
C
C
B
Problem 1
Mr. Smith likes cashews better than almonds and likes almonds better than walnuts. He likes
pecans equally well as macadamia nuts and prefers macadamia nuts to almonds

Assignment 1 : Regression Analysis 70208
Summer One: 2012
May 22, 2012
Due Date: July 13,4th 2012 in class class
June 2015 beginning of the
1. Events, Sample Spaces and Probability
It is vital that a certain document reaches its destination on time. To
ma

70-208 Regression Analysis
1.
a)
E(x) E(
xi
n
)
1
n
E(xi ) n
n
b)
2
xi
1
n 2 X
Var(x) Var( ) 2 E(xi ) 2 X
n n
n
n
2.
a)
H
P
G
R
P
0.432
1.00
-0.015
0.989
G
0.846
0.015
1.00
-0.100
R
0.330
0.989
-0.100
1.00
There is a possible problem of multicolinearil

70-208
Assignment 1
1.
a) Since they all independent,
P(A1 and A2 and A3) = P(A1)*P(A2)*P(A3) = 0.95*0.85*0.9 = 0.72675
b) Let the event that the document reaches the destination by service II be B.
P(B) = P(A2)*P(A2)*P(A2) = (0.85)3 = 0.614
c)
2.
a) E[aX

70208 Homework 1
Due January 27, 2016
Homeworks must be turned in during lecture. No late assignments will be
accepted. You may work in groups, but you must write up the answers on your
own and write down who you worked with. For each problem, make sure t

70208 Homework 2
Due February 3, 2016
Homeworks must be turned in during lecture. No late assignments will be
accepted. You may work in groups, but you must write up the answers on your
own and write down who you worked with. For each problem, make sure t

Regression Analysis
Exam 1
February 17, 2016
There are a total of 100 points on the exam. You can use a calculator. Write all
of your answers in your blue book. Nothing written on the exam sheet will be
graded. When you nish your exam, turn in the blue bo

Regression Analysis
Exam 1
February 17, 2016
There are a total of 100 points on the exam. You can use a calculator. Write all
of your answers in your blue book. Nothing written on the exam sheet will be
graded. When you nish your exam, turn in the blue bo

Practice problems on hypothesis tests for least squares parameters
For all of the answers, I used the t-values corresponding to 100 degrees of
freedom.
1. (30.11,33.50)
2. (-0.379,-0.238)
3. The test statistic is equal to 1.77. The decision rule is to rej

Practice problems on hypothesis tests for least squares parameters
You are interested in how parental income aects average test scores in
schools. In this analysis, we do not have information on the parental income for
students in each school. Instead, we

70208 Homework 3
Due February 10, 2016
Homeworks must be turned in during lecture. No late assignments will be
accepted. You may work in groups, but you must write up the answers on your
own and write down who you worked with. Write your recitation sectio

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Name:
Recitation:
Andrew id:
Regression Analysis 70-208
Prof. Maria Marta Ferreyra
Spring 2013
Second Midterm Exam
Total Number of Points = 85 Points
Total Time = 50 minutes
Note:
1. This midterm includes ONE (1) question. To facilitate your work, the set

Regression Analysis 70-208
Prof. Maria Marta Ferreyra
Spring 2013 - Second Midterm Exam
COMPANION SHEET
1. Some sample statistics:
Variable
pctPriv
numPrivSch
avgFamInc
Average
Std.Deviation
21.495
0.384
76.151
2. Regression (1): pctPriv on numPrivSch
SUM

Carnegie Mellon University
Tepper School of Business
70208 Regression Analysis
Spring 2014
Using Excel to Solve Assignments
Excel has the capability of running regressions through its Data Analysis pack. However, the
pack is not available for Macintosh. H

Regression Analysis 70-208
Prof. Maria Marta Ferreyra
Spring 2014
Problem Set 1
(due 01.27.14 at 5:00pm)
Total number of points: 75 points
A note before you begin
In this problem set you will explore inference about the population mean. You will also
exam

Name:
Recitation:
Andrew id:
Regression Analysis 70-208
Prof. Maria Marta Ferreyra
Spring 2012
First Midterm Exam
Total Number of Points = 90 Points
Total Time = 50 minutes
Note:
1. Your scores will entirely depend on the quality of your answers. The more

Regression Analysis 70-208
Prof. Maria Marta Ferreyra
Spring 2014
Problem Set 2
(due 02.03.14 at 5:00p)
Total number of points: 135 points
A note before you begin
In this problem set you will explore conditional distributions, the conditional expectation

Regression Analysis 70-208
Prof. Maria Marta Ferreyra
Spring 2014
Problem Set 3
(due 02.17.14 at 5:00p)
Total number of points: 75 points
A note before you begin
In this problem set you will explore issues related to the goodness of fit of a regression,
a

Regression Analysis 70-208
Prof. Maria Marta Ferreyra
Spring 2014
Problem Set 4
(due 02.24.14 at 5:00p)
Total number of points: 80 points
A note before you begin
In this problem set you will explore statistical inference using Least Squares.
If you need t

Name:
Recitation:
Andrew id:
Regression Analysis 70-208
Prof. Maria Marta Ferreyra
Spring 2014
First Midterm Exam Answer Key
Total Number of Points = 110 Points
Total Time = 50 minutes
Note:
1. This midterm includes TWO (2) questions. To facilitate your w