3.
It is a fact that Yi = b0 + b1 X i . We will use this fact in our proofs.
n
Sum both sides over i
Remove the parentheses
Notice that b0 + b0 + + b0 = nb0
n
i =1
n
(a)
i =1
n
i =1
n
i =1
Yi = (b0 + b1 X i )
Y = nb
i =1
n
Use Normal Equation I
n
Yi =
STAT3503 Fall 2013
ASSIGNMENT TWO
DUE: Wednesday 16 October, 2:35 pm in class
Lateness -20%, due Fri. 18 Oct. 2:35 pm at 4313 HP (Herzberg)
Submit your answers and all relevant SAS output.
1.
Consider this data set.
On a separate page, provide the followi
STAT3503 Fall 2013
ASSIGNMENT ONE
DUE: Wednesday 2 October, 2:35 pm in class
Lateness -20%, due Fri. 4 Oct. 2:35 pm at the Math & Stats office
Submit your answers and all relevant SAS output.
1. Dry cereal is a moisture-sensitive product (very few people
STAT3503 Fall 2013
1.
(a)
PRACTICE SET for Simple Linear Regression
Suppose a company is interested in using a linear regression model to predict monthly
profits based on monthly sales. The sales manager collects ten observations (values
are in thousands
STAT 2509 B
Assignment #3
March 4th, 2014 (to be handed in during the class)
DUE:
1.
A researcher believes that the six-month certificate of deposit interest rate can be
predicted from the price of gold ( X 1 , in dollars per troy ounce) and the money sup
STAT 2509 B
Assignment #4
DUE:
1.
March 27th, 2014 (to be handed in during the class)
Agency revenues. An economic consultant was retained by a large employment agency
in a metropolitan area to develop a regression model for predicting monthly agency
reve
STAT3503
Assignment # 1
Due Jun. 2nd IN Tutorial.
Question 1. (Use SAS to solve this question) The director of admissions of a small college selected
120 students at random from the new freshman class in a study to determine whether a students grade
point
STAT3503 Fall 2013
ASSIGNMENT THREE
DUE: Wednesday 20 November, 2:35 pm in class
Lateness -20%, due Fri. 22 Nov. 2:35 pm at 4313 HP (Herzberg)
Submit your answers and all relevant SAS output.
n
1
Consider the function Q = (Yi Ecfw_Y ) 2 for use with a fir
STAT3503 A Last Name First Name
Midterm Student Number
June 25, 2009
Nonprogrammable calculators are allowed. Total Mark=50
Question 1. Infestation of crops by insects has long been of great concern to farmers and agricultural scientists. The article Cot
STAT3503
Assignment # 2
Question 1. (Use SAS to solve this question) A criminologist studying the relationship between level of education and crime rate in medium-size U.S. counties collected the following data for a random sample of 84 counties; X is the
STAT 3502 ASSIGNMENT 3 (Chs. 4 and 5).
Due: Wednesday, March 25, in class. Late assignments will NOT be accepted.
TAs will NOT accept assignments directly from students.
Do NOT forget to indicate your tutorial section. Total of marks = 100
1. [4] The numb
CARLETON UNIVERSITY FINAL EXAMINATION December 2007 DURATION: 3 hours No. of Pages No. of Students: 85 Department Name & Course Number: Mathematics and Statistics STAT3503*A Course Instructor(s) Dr.Shirley E. Mills THIS EXAMINATION MAY NOT BE RELEASED TO
STAT3503
Assignment # 5
Due Aug 13 IN Tutorial.
Question 1. (Use SAS to solve this question) The board of directors of a professional association conducted a random sample survey of 30 members to assess the eects of several possible amounts of dues increa
STAT3503
Assignment # 4
Due Aug. 6 IN Tutorial.
Question 1. (Use SAS to solve this question) In a small-scale experimental study of the relation between degree of brand liking (Y) and moisture content (X1 ) and sweetness (X2 ) of the product, the followin
20:33 Saturday, October 11, 2014
The REG Procedure
Model: MODEL1
Dependent Variable: Y Hardness of Plastic
Number of Observations Read
16
Number of Observations Used
16
Analysis of Variance
Source
Sum of
Squares
DF
Model
1 5297.51250
Error
14
Corrected To