Stat-UB.0003. Regression and Forecasting Models
Prof. Frydman
February 10, 2012
Topics from simple linear regression to study for the midterm
Simple Linear Regression Model ( = 0 + 1 + )
1) Testing statistical signicance of the estimated model (0 : 1 = 0

Stat-UB.0003. Regression and Forecasting Models
Prof. Frydman
February 14, 2012
Solutions to Review exercise
The Wall Street Journal (December 30, 1984) published the data set
containing information on starting salary and height of 30 randomly selected
ma

Stat-UB.0003. Regression and Forecasting Models
Prof. Frydman
February 23, 2012
Solutions to Test 1 (A)
(16) 1) The director of human resources in a large corporation obtained
a regression model of Salary (in $1000) on Years= number of years of experience

Stat-UB.0003. Regression and Forecasting Models
Prof. Frydman
January 31, 2012
Homework 2
(due February 7)
Reading: Sections 10.1-10.4 from MBS and Lecture Notes on Simple
Linear Regression (pages 1-11)
Exercises: 10.36 page 581 from MBS .and two addition

Stat-UB.0003. Regression and Forecasting Models
Prof. Frydman
February 7, 2012
Homework 3
(due February 14)
Reading: Chapter 10 in MBS and Lecture Notes on Simple Linear
Regression
Exercises: Exercise 10.82 on page 607 from MBS and two additional
exercise

Stat-UB.0003. Regression and Forecasting Models
Prof. Frydman
February 7, 2012
Solutions to Homework 2
A1) (In this problem you should do calculations without using Minitab.)
Consider the following data set
1 2 3 4
2 4 4 5
b
a) Find a least squares line

Statistical Notations
Symbol
Used for
Sigma
summation
mu
mean for population
X
X bar
mean for sample
2
Sigma square
variance for population
S2
S- square
variance for sample
Sigma
Standard deviation for population
S
S
Standard deviation for sample
p
p
The

Stat-UB.0003. Regression and Forecasting Models
Prof. Frydman
February 24, 2012
Solution to Class exercise (Feb 21)
In a study exploring the relationship between water quality and land use
the measurements were obtained on 20 river basins in New York Stat

Stat-UB.0003. Regression and Forecasting Models
Prof. Frydman
February 23, 2012
Solutions Test 1 (B)
(14) 1) A marketing manager for Country Kitchen Corporation (CKC),
which sells snack food product "Nature -Bar" in dierent regions, was interested in how

Stat-UB.0003. Regression and Forecasting Models
Prof. Frydman
March 2, 2012
Solutions to Multiple Linear Regression Review Questions
Q1) The regression model for Salary (in dollars) was developed from the
salary survey of computer professionals in a large

Stat-UB.0003. Regression and Forecasting Models
Prof. Frydman
March 1, 2012
Solutions to Homework 4
A1) The data considered in this question are based on a 5% random
sample of all births occurring in Philadelphia in 1990. The sample has 1115
observations

Stat-UB.0003. Regression and Forecasting Models
Prof. Frydman
February 14, 2012
Solutions to Homework 3
A1) One may wonder if people of similar heights tend to marry each
other. For this purpose, a sample of newly wed couples was selected. Consider a simp

Handout assignment I
Due date: 2/4/2016
1. A manufacturing company is interested in predicting the number of defects that will be produced each
hour on the assembly line. The managers believe that there is a relationship between the defect rate and
the pr