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 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
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
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
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
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
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
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
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 2509B
Test#1
th
(February 6 , 2014)
All solutions must be shown clearly.
1.
Suppose we were interested in knowing how the amount of fertilizer influences the corn yield.
The yield per plot in bushels of corn was observed on 10 plots that had been fer
STAT 2509B
Test#2
(March 6th, 2014)
All solutions must be shown clearly.
1.
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 revenues ( y )
Linear Regression
Simple Linear Regression
How to measure
Information in the data
Information
How much information in a variable?
The dispersion represents the amount of
information
How to measure the dispersion?
Range, Max(xi) Min( xi)
Sum of absolute
STAT3503 A
Midterm
Last Name
June 16, 2015
First Name
Student Number
Nonprogrammable calculators are allowed.
This is a closed book exam.
The exam duration is 90 minutes.
Total Mark=50
Questin 1
Points
5
2
3
4
5
Total
27
8
5
5
50
Score
Question 1. Is
STAT3503 A Assignment 1
Last Name
Due Oct 5, 2016 In Tutorial
First Name
Student Number
Question:
1
2
3
4
Total
Points:
20
5
9
16
50
Score:
1. (Use SAS to solve this question) The director of admissions of a small college selected 120
students at random f
STAT3503 A
Midterm
Last Name
June 16, 2015
First Name
Student Number
Nonprogrammable calculators are allowed.
This is a closed book exam.
The exam duration is 90 minutes.
Total Mark=50
Questin 1
Points
5
2
3
4
5
Total
27
8
5
5
50
Score
Question 1. Is