QMB 7566: Spring 2016
Assignment C: Cluster Analysis
1. Research question
The group of researchers created in the food laboratory 18 different cheese fondue blends
by varying the key ingredients in the recipe. The goal of the project is to use the data to

Isaac Aviles
QMB3200.099F16
Answers to Questions Exercise #1
a. Market value actual sales prices of homes
b. Sale price and estimate value (quantitative data) single family properties
(qualitative data)
c. Random Sample since not all single family residen

LECTURE #18
Residual Analysis (Section 12.11)
Residual = difference between observed value and predicted value; (y - y ).
- Assumptions: ~ iid N (0, 2) the assumptions are on the random error
y = 0 + 1x1 + 2x2 + =>
= y - ( 0 + 1x1 + 2x2)
= y - ( 0 + 1x1

LECTURE #10
Step 5: Use the Model for Estimation and Prediction
1) Estimation - Estimate E(y) for a given value of x with a CI
EX: Estimating mean stock RR for all years in which x=10 (10% market RR)
2) Prediction - Predict y for a given value of x with

LECTURE #13
A third type of Multiple Regression model is a Quadratic (2nd-order) Model (Sec. 12.6)
Example 12.7 (p. 698): Model electrical usage (y) of home as function of home size (x)
Experimental unit = a home (n = 15 homes) - (See scattergram of data

LECTURE #20 (Review for exam)
PRACTICE PROJECT EXAM #3
I.
1.
DATA AND VARIABLES
Briefly describe each of the following for your data - which appears on SX PAGE
. (1 pt.)
a)
Experimental unit (2 pts.)
b)
Dependent variable, y. (Give units of measurement,

LECTURE #19
Problems/Pitfalls:
Multicollinearity (Section 12.12): xs are correlated
Ex 12.18 (p. 755): Federal Trade Commission (FTC) wants to predict carbon monoxide content of a
cigarette. Data collected for 25 cigarette brands smoked with a smoking ma

ACG2021
Lynn Ansley
Chapter 1
Accounting and the Business Environment
Why is accounting important?
Accounting is the information system that measure business activities, processed the information into
reports, and communicates the results to decision make

LECTURE #15
Testing Portions of a Model-Subset F-test (Section 12.9)
- Ex 12.12 (p. 725) :
Again, model y = auction price ($) of GF clock using x 1 = Age (years) and x 2 = Number of Bidders,
but assume both age and number of bidders are curvilinearly rel

Accessing QMB 3200 HW data files Statistix 10.0:
OPTION #1
Step 1: Put the Resource CD provided in your textbook in your computers CD drive
(say, drive F).
Step 2: Enter into a Statistix session by clicking on the SX flag icon on your desktop. (If
you hav

LECTURE #21
* CHAPTER 14: TIME SERIES (TS) FORECASTING MODELS *
(see Text CD)
Time series data: Data collected sequentially over time (e.g., months, years, days, quarters)
(With TS data, exp. unit is the unit of time)
EXs: Record monthy sales revenue . a

As of February 16
House Expenses
Mortgage
Maintenance
HOA
Tmobile
Verizon
Electricity
Blue Cross
FloridaKid
Toyota
TVMia
Netflix
Food
gas
Car insurance
TOTAL
Credit Balances Balance Owed
$ 860.00
$ 250.00
$ 170.00
$ 131.00
$ 112.00
$ 100.00
$ 155.00
$
15.

QMB 7566: Spring 2016
Problem A: Logistic Regression
1. Research question
This study evaluated the academic and demographic factors related to the performance on the
Bar Exam of graduate students at a law school. Data was collected on law school graduates

QMB 7566: Spring 2016
Problem E: Principal Components
1. Research question
In order for the applicant to get alone, he/she must provide bank with eight pieces of
personal information: income, education level, age, length of time at current residence,
leng

QMB 7566: Spring 2016
Assignment G: ANOVA
1. Research question
A marketing consultant firm provides its clients with advice on print advertising.
Consequently, it is necessary for the companys consultant team to know which type of
print advertising is the

QMB 7566: Spring 2016
Assignment D: MANOVA
1. Research question
Research team at the University of Pittsburgh are studying the risk-taking
behavior of people in a business environment. The researchers proposed two theories:
Theory 1: On average, males are

QMB 7566: Spring 2016
Assignment D: ANCOVA
1. Research question
An experiment was conducted to determine which of the paint blends is the hardest.
Twenty four painted metal pieces were measured for hardness. The paint samples varied
depending on the paint

QMB 3200
NAMES _
_
Project 1
Summer 2016
Directions:
1.
Choose one of the data sets assigned in Blackboard and enter the data
into a Statistix data file.
2.
Use the Statistix program to create the printouts requested in this exam.
3.
Attach the requested

LECTURES #16 & #17
Class project: consider models with both quantitative (QN) & qualitative (QL) variables
Example: Female professor salary discrimination .
Model E(y) = mean salary of USF professor as a function of Experience & Gender, where:
x1 = years

LECTURE #8
* CHAPTER 11: SIMPLE LINEAR REGRESSION (SLR) *
Goal: Predict the value of one variable from values of related variables.
Dependent variable: variable to be predicted (y)
Independent variables: predictor variables (x1, x2 . . .)
Experimental un

LECTURE #12
* Section 12.5 Interaction Models *
Example 12.6 ( page 692) GF clock collector has another theory
Theory #1: First Order Model
Relationship between y and x's is linear and therefore, the Model is:
Hold x2 fixed for different values and then

LECTURE #9
Step 4: Statistically check model adequacy.
Is straight-line model with x a useful linear predictor of y? If not, then 1 = 0; thus, we test:
Ho: 1 = 0 (Model not useful) vs. Ha: 1 > 0 (Model is statistically useful)
(Do an upper tail test- if