Introductory Statistics
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1
Factorial design
Factor A
B2
In a factorial design, there are two or
more experimental factors, each with
a given number of levels.
A1
y11k
y12k
Observations are made for each
combination of the levels of each
factor (see example)
y13k
A2
y21k
y22k
Y23k
Regression
a
Variables Entered/Removed
Model
1
Variables
Entered
Variables
Removed
Per Capita
State and
Local Govt.
Spending for
Education:
b
2007
Method
.
Enter
a. Dependent Variable: Percent of Population Black: 2008
b. All requested variables entered.
Regression
Model Summary
Model
1
R
.431
R Square
a
Adjusted R
Square
.186
Std. Error of
the Estimate
.126
890.6092
a. Predictors: (Constant), Personal Bankruptcy Rate per 100,000: 2009, Homeownership Rate: 2008, Divorce
Rate per 1,000 Pop.: 2008
ANOVA a
S
BOSTON UNIVERSITY SCHOOL OF MANAGEMENT
Regression Project
Sign up your team on SMGTools by Thursday Feb 16
Part I due Friday February 24 6 p.m. Room 520F
Part II due Monday March 26 6 p.m. Room 520F
Read the entire project before you begin.
You work for a
II A
Table 1
Variable name
The excel formula
Household
income
Age of respondent
=HH_income
The sign of
coefficient
Positive
=age_resp
Positive
Education level of
respondent
Housing
ownership
=Educ_resp
Positive
=Housing_ownersh
ip
Negative
Number of hours
SM 221 Practice Questions for Exam #1
1. A city has variable weather during the fall. It rains on 20% of the days. Also. its
cold on 25% of the days. Assume rainfall and whether its cold are independent.
What is the probability that a given day will be ei
Review Problems Exam #2
1. The time it takes to drive from BU to Newton Centre on a weekday morning is
normally distributed with a mean, = 24 minutes and a standard deviation, = 8
minutes. What proportion of the drive times will be under 34 minutes?
2. In
More Review Problems Exam #2
1. Suppose we have a population with mean of 10 and standard deviation of 2. If
we randomly sample n = 64, what is the probability that sample mean, x-bar,
exceeds 11? (Excel Command)
2. Using the same information from problem
SM221
STATISTICALAND ECONOMICDECISION MAKING
Fall2011
Course Coordinator
Mark G.Kean
595Commonwealth, #606
Tel:6173534164
email:bird33@bu.edu
COURSEOBJECTIVES
A.
B.
C.
D.
E.
F.
Introduce basicconcepts and techniques inprobability and statisticswhich:
1.ca
04-Creswell (Designing)-45025.qxd
5/16/2006
CHAPTER
8:35 PM
Page 58
4
CHOOSING A MIXED
METHODS DESIGN
R
esearch designs are procedures for collecting, analyzing, interpreting,
and reporting data in research studies. They represent different models for doi