STAT 3504 Review Problems I: Midterm
For problems 1 5 answer the following questions:
(a) What is the response variable?
(b) What is the study unit? (c) What are the factors?
(d) What are the treatments?
(e) Is the study experimental, observational or mix
Homework 6 Solution
Due : Feb. 17, 2016, In Class
In a two-factor study, the treatment means i j are as follows:
Factor A B1
a. Obtain the factor B main effects. What do your resu
Week 5: Regression analysis in-class example (R version)
A large national grocery retailer tracks productivity and costs of its facilities closely. Data were obtained
from a single distribution center for a one-year period. Each data point for each variab
due: 2010-09-24 (p. 1)
Stat 849: Homework Assignment 1
Due: September 24, 2010
Total points = 70
1. Suppose Y is Nn (, 2 I) and suppose X is an n p matrix of constants with rank p < n.
(a) Show that A = X(X 0 X)1 X 0 an
Quiz 5: Regression Analysis (Part A)
Grocery retailer. A large, national grocery retailer tracks productivity and costs of its
facilities closely. Data below were obtained from a single distribution center for a one-
> load("/Users/aalbakri/Desktop/Stats HW1/Data.RData")
> #Data Set
> RunningSpeed<-c(1.25, 1.64, 1.91, 2.31, 2.37, 2.38, 2.84, 2.87,
2.93, 2.94, 2.98, 3.00, 3.09, 3.22, 3.41)
> #Building a histogram
> #Finding the mean and standard de
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2016 Rice Universit
7830 Industry Overview Template
Your Industry / Company:
Follow all these instructions:
1. Do NOT change fonts, margins, etc.
2. Do not worry about APA format. Use BULLET professional format.
3. Make sure you have at least 3-5 bullets for
1. Liquidity refers to the ability of an enterprise to pay its debts as they mature.
2. The balance sheet omits many items that are of financial value to the business but cannot
be recorded objectively.
3. Financial flexibility measur
CHOOSING A MIXED
esearch designs are procedures for collecting, analyzing, interpreting,
and reporting data in research studies. They represent different models for doi
In a factorial design, there are two or
more experimental factors, each with
a given number of levels.
Observations are made for each
combination of the levels of each
factor (see example)
a. Dependent Variable: Percent of Population Black: 2008
b. All requested variables entered.
Std. Error of
a. Predictors: (Constant), Personal Bankruptcy Rate per 100,000: 2009, Homeownership Rate: 2008, Divorce
Rate per 1,000 Pop.: 2008
BOSTON UNIVERSITY SCHOOL OF MANAGEMENT
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
The excel formula
Age of respondent
The sign of
Education level of
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?