Homework 1
ECO 320
Due: February 18, 2015, 10PM
This assignment is due at the date and time indicated above. Please submit your assignment
electronically using the Google form. The link of Google Form will be sent to your email. Do not
forget to check the
ECO 320
Fall 2012
Test #2
KEY
(20) 1. The following table shows the non  zero values of the joint p.d.f. of the random variables
X andY.
X
2
1
y
0

2
1
10
3
10

10
4
10
1
2
6
2
21
14
Moreover, E[ X]=, ax=, and cry=.
10
25
100
6
x=1
10
4
x=2
=
10
= 0
Homework 1
ECO 320
Due: February 18, 2015, 10PM
This assignment is due at the date and time indicated above. Please submit your assignment
electronically using the Google form. The link of Google Form will be sent to your email. Do not
forget to check the
Syllabus for Economics 320:
Mathematical Statistics
Mark R. Montgomery
email: mark.montgomery@stonybrook.edu
Revised: August 21, 2015
Contents
1
Overview
2
2
Readings up to the First Examination
4
1
Chapter 1
Overview
Textbook The textbook for Economics 3
Homework 4
ECO 320
Due: April 15, 2015, 10PM
This assignment is due at the date and time indicated above. Please submit your assignment
electronically using the Google form. The link of Google Form will be sent to your email. Do not
forget to check the bo
ECO 320: Mathematical Statistics
Final Exam, Spring 2015
Date: May 14, 2015
Samuele Centorrino
Student name:
Stony Brook ID:
INSTRUCTIONS (please read carefully):
There are 5 openended problems and 8 multiplechoice problems.
You have 120 minutes to solv
Homework 0
ECO 320
Due: February 4, 2015, 10PM
This assignment is due at the date and time indicated above. Remeber that this assignment
is not for grading. Please submit your assignment electronically using the Google form. The link
of Google Form will b
Homework 2
ECO 320
Due: March 4th, 2015, 10PM
This assignment is due at the date and time indicated above. Please submit your assignment
electronically using the Google form. The link of Google Form will be sent to your email. Do not
forget to check the b
Homework 5
ECO 320
Due: April 29, 2015, 10PM
This assignment is due at the date and time indicated above. Please submit your assignment
electronically using the Google form. The link of Google Form will be sent to your email. Do not
forget to check the bo
ECO 320: Mathematical Statistics
Midterm Exam, Spring 2015
Date: March 4, 2015
Samuele Centorrino
Student name:
Stony Brook ID:
INSTRUCTIONS (please read carefully):
There are 3 openended problems and 5 multiplechoice problems.
You have 80 minutes to so
ECO 320: Mathematical Statistics
Final Exam, Spring 2015
Date: May 14, 2015
Samuele Centorrino
Student name:
Stony Brook ID:
INSTRUCTIONS (please read carefully):
There are 5 openended problems and 8 multiplechoice problems.
You have 120 minutes to solv
ECON 320: Mathematical Statistics
Midterm Exam, Spring 2015
Date: March 4, 2015
Samuele Centorrino
Student name:
Stony Brook ID:
INSTRUCTIONS (please read carefully):
There are 3 openended problems and 5 multiplechoice problems.
You have 80 minutes to s
ECO 320: Mathematical Statistics
Spring 2015
Mo We 05:30 pm06:50 pm
Melville Lbr W4525
Professor:
Email:
Oce hours:
Location:
Samuele Centorrino
samuele.centorrino@stonybrook.edu
Mo 1:30pm3:30pm
Room N613, 6th oor of the SBS building.
TA:
Email:
Oce ho
Homework 5
ECO 320
Due: April 29, 2015, 10PM
This assignment is due at the date and time indicated above. Please submit your assignment
electronically using the Google form. The link of Google Form will be sent to your email. Do not
forget to check the bo
Homework 0 Answers
ECO 320
Due: September 11, 2014, 5PM
This assignment is due at the date and time indicated above. Remember that this assignment
is not for grading. Please submit your assignment electronically using the Google form. The link
of Google F
Homework 4
ECO 320
Due: April 15, 2015, 10PM
This assignment is due at the date and time indicated above. Please submit your assignment
electronically using the Google form. The link of Google Form will be sent to your email. Do not
forget to check the bo
Name_
ECO 320
Section
( Please print )
Fall 2011
Test #lB
Show all of your work. The# in ( ) in front of each question is the point value of
that question.
(29) 1. The random variable X has the following p.d.f.
f(x) =
X+
1
X
= 0, 1, 2, 3
10
elsewhere and
/If,~!<
Name._
Section
ECO 320
( Please print )
Fall2011
Test #1A
Show all of your work. The # in ( ) in front of each question is the point value of
that question.
(29) 1. The random variable X has the following p.d.f.
f(x) =
X+
10
1
X= Q,
elsewhere and
Section#: 1 2 Name: _ _ _ _ _ _ _ _ _ _ _ _
ECO 320
Fall2012
Test #1
(18)1. For 9\
f(x)
= cfw_x; x = 1 ~ x ~ 5 , the p.s.f. f(x) is defined as
= X
x = 1, 2, . , 5
15
=0
elsewhere. Given that A = cfw_ x; 1 ~ x
(4)a. P(A)
~
3 and B = cfw_ x; 4 < x
=
(4)b.
Lecture 5 Eco 320
September 14, 2016
Lecture 5 Eco 320
September 14, 2016
1 / 17
Define Probability
Recap
Sample space and event:
The sample space S of an experiment is the set of all possible
outcomes of the experiment. An event A is a subset of the samp
Section#: 1 2 Name: _ _ _ _ _ _ _ _ _ _ _ _ _
ECO 320
Fall2012
Test #2
(20) 1. The following table shows the non zero values of the joint p.d.f. of the random variables
X andY.
X
2
y
2
10
4
10
0

1
(5)a. f X (
(3)b. E[
1
10
3
10

Moreover, E[ X]=
X) =
Chapter 1: Introduction to Data, Continued
Mark R. Montgomery
Economics
Lectures of 27 August and 1 September 2015
Experiments
1
Experiments
2
Examining numerical data
3
Associations between two variables
4
Considering categorical data
5
Comparing numeric
Welcome to Economics 320: Mathematical Statistics
and
Chapter 1: Introduction to Data
Mark R. Montgomery
Economics
Lecture of 25 August 2015
Economics 320
What will you learn here that equips you for todays job market?
Quantitative analytics In business,
ECO 320
Fall2012
Test #1
KEY
(18)1 . For 9\ = cfw_ x; x = 1 :; x :; 5 , the p.s.f. f(x) is defined as
f(x)
= X
x
15
=0
= 1, 2, . , 5
elsewhere. Given that A= cfw_ x; 1:; x:; 3 and B = cfw_ x; 4 < x :; 5 ,
(4)a. P(A)
= ~ = i_
5
15
(4)b. P(A n B)= 0
( 4)c
Homework 3
ECO 320
Due: April 1, 2015, 10PM
This assignment is due at the date and time indicated above. Please submit your assignment
electronically using the Google form. The link of Google Form will be sent to your email. Do not
forget to check the box
Homework 2 Answers
ECO 320
Due: March 4th, 2015, 10PM
This assignment is due at the date and time indicated above. Please submit your assignment
electronically using the Google form. The link of Google Form will be sent to your email. Do not
forget to che
Homework 3
ECO 320
Due: October 23, 2014, 5PM
This assignment is due at the date and time indicated above. Please submit your assignment
electronically using the Google form. The link of Google Form will be sent to your email. Do not
forget to check the b
rm(list=ls()
library(openintro)
#Load our textbook package
data(countyComplete)#Loading dataset we would like to use
View(countyComplete)#make it show up
InspectVars<c("state","pop2010","fed_spending",
"per_capita_income","poverty",
"age_under_18","age_o
ECO 320
Quiz 1
Sample
Name
ID
Recitation Time
KEY
Students must show all work on problems that involve calculation, even if the question is multiple
choice.
Questions 1 through 4 refer to the following:
The following data set shows the total pounds lifted
ECO 320 Mathematical Statistics
Problem Set 1
Due 2/2/2017
1.
A department store chain randomly sampled 10 stores in a state. After a review of sales
records, it was found that compared with the same period last year, the following
percentage increases in
ECON 320
Quiz 1
Spring 2017
Name
ID
Recitation Time
Students must show all work on problems that involve calculation, even if the question is multiple
choice.
Questions 1 4 refer to the following.
A sample of small accounting firms reveals the following n
Lecture 1: The Syllabus, Basics and Central Tendency
I)
So we're going to walk through the syllabus and I'll bring up some important points.
1) I expect my students to take this class seriously, which means you need to study hard in
my class. It does not
Lecture 2: Measures of Spread
One of the two main purposes of statistics is to describe data. Weve already covered one way of
describing data, the mean. This tells us where the center of the data is. But there is a lot more
going on in a given set of data