Standard Error of the
Sample Mean
Announcements
Reading for Thursday: MDD
Chapter 6
For Thursday: Bring your LAPTOP
and your copy of MDD
Make sure you have Analysis Toolpak
add-in
Problem Set 1 due June 1. (Will be
posted today.)
Todays agenda
Normal Dist

SM222 Modeling Business Decisions and Market Outcomes
Additional Review Questions For SM222 Test 1
1.
The president of a university is trying to determine factors that determine students success, as
represented by higher GPA, in his university.

Practice Midterm
1. In the CycleShare project, you used simulation to find the probability the company would lose
money depending on how many locations it opened. Describe another context in which you
could use simulation to answer a business problem (NOT

SM222 Modeling Business Decisions
Summer 2016
Problem Set 3 - Answers
Question 1
The Massachusetts Department of Education administers a mandatory test for all MA public schools
called the MCAS. A statistician was asked to evaluate how average teacher sal

QM222 Modeling Business Decisions
Summer 2016
Problem Set 4 - Answers
Due Tuesday June 28 by 6pm
I.
Multiple Slopes
Executives at an on-line clothing company named Impress is interested in knowing
whether it would make more sales if it offered free shippi

QM222 Modeling Business Decisions
Summer 2016
Problem Set 2 - Answers
Due Wednesday, June 8th by 6pm
Part 1: Short answer questions.
a. The vast majority of hotel guests do not take the time to rate their hotel experience on
Tripadvisor.com. What sort of

INTRODUCTION TO
REGRESSION
SM222, Osher
Lecture 8
1
Reminders
Project Part A due Friday (6/10)
No class on Wednesday 6/8 or on
Friday (6/10)
Review session is Thursday 6/9
Midterm is a week from Monday
(6/13) If you are entitled to extra
time please get m

Standard Error of the
Coefficient
SM222, Osher
Lecture 9
1
Announcements
Problem Set 2 due Wednesday
Regression Project, Part A, due Friday,
6/10
Exam on 6/13
SM222, Osher
Lecture 9
2
Agenda
Standard error of coefficients
Hypothesis testing with coefficie

Relationships Between
Variables
Scatterplots & Correlation
QM222, Osher
Lecture 6
1
Announcements
Problem Set 1 due today
For tomorrow:
Making Decisions with Data, Chapter 9
When it comes to fund performance, history
is often written by the winners (WSJ 2

Case study: Simple Linear Regression
QM222, Osher
Lecture 10
1
Reminders
Pset 2 due Wednesday, June 8
No class on Wednesday
Review Session for Exam Thursday
during section
No class on Friday
Midterm Exam during class time
QM222, Osher
Lecture 10
2
Agenda

Choosing the Right
Statistic for the Question
SM222, Osher
Lecture 7
1
Announcements
Project Part A due Friday 6/10 at
6 PM
Must turn in hard copy to room
520F
Reading for tomorrow 6/3:
Making Decisions with Data, Ch. 10
SM222, Osher
Lecture 7
2
Todays ag

Welcome!
QM 222
Modeling Business Decisions
Professor Keith Osher
Agenda
Attendance/Introductions
Tent Cards are available on Virtual UPO
Review of Syllabus
Miscellaneous items
Lecture 1 introduction to decisions
with data
QM 222, Osher
Lecture #1
2
Findi

Introduction to Anlaysis,
Interpretation and
Presentation of Data
Forming Questions and
Describing Data
Prof. Osher, QM222
Lecture 2
1
Todays agenda
Questions
Announcements: Problem Set 1 due: Wed.,
June 1
Discuss data characteristics and data types
Data

Study Questions based on Midterm Spring 2014 ANSWERS
IMPORTANT: NOTE THAT WE HAVE DELETED MANY QUESTIONS THAT WERE NOT
RELEVANT FOR OUR MIDTERM. THE ACTUAL MIDTERM WAS LONGER.
Part I
1. (2.5 points) You work for a retail consulting firm and you have colle