Statistics 302 practice midterm exam solutions
1. (5 marks) Fill in a complete ANOVA table starting from the following three columns
(recreate these three columns in your answer).
Source
Df
Model
4
Residuals 45
C Total
49
Sum Sq
332.92
650.71
983.63
Solut
Statistics 302 Homework 3
Solutions
This homework is out of a total of 30 marks.
Chapter 8, #10 (5 marks) In this example, it would have been possible to use the
output given in the book. However, I said explicitly that I wanted you to use a
computer.
a)
Statistics 302 Homework 3
Solutions
Chapter 9, #4 (8 marks)
a) (3 marks) If you took a model-building perspective, you would use an error
sum of squares of 585.025 on 17 degrees of freedom for adding X3 to the null
model, 401.282 on 16 degrees of freedom
Statistics 302 Homework 1
Solutions
Ch. 3, #3 (2 marks)
a) P (X 1) = 1 P (Z < 1) = 1 0.1587 = 0.8413
b) P (X 0.842) = 0.20 from computer software. You might of guessed this
from the question and the tables in the book, or you might have just reported
the
Statistics 302 Homework 1
Solutions
Ch. 3, #3 (2 marks)
a) You could look this up in the statistical tables at the back of the book or
use computer software. For Z N (0, 1), the approach using the book would
proceed as P (Z 1) = 1 P (Z < 1) = 1 0.1587 = 0
Statistics 302 Homework 2 Solutions
Chapter 5, #10 (6 marks)
a) (3 marks) The estimated slope is 0.998 and the estimated intercept is 7.491
taken from the computer output below (1 mark). You could also have read these
o the computer output given in the bo
Statistics 302 Midterm Exam Solutions
1. (5 marks) Complete the following summary of a tted regression model (1 mark
for each entry).
Source
DF
Sum of Sq
Mean Sq
F
-36.882
Model
3
_36.882_
12.294
_12.173_
Residuals
Total
_20_
20.198
23
_1.010_
57.080
R-sq
Statistics 302 Homework 5 Solutions
1. Chapter 17 problem 2 (13 marks)
(a) (2 marks 1/2 for
ANOVA table is
Source df SS
City
2 26.00
Error
6 16.00
Total
8 42.00
getting each of the df, SS, MS and F correct) The
MS
F
13.00 4.87
2.667
(b) (2 marks) The valu
Statistics 302 Homework 4 Solutions
Canadian Communities Data (37 marks)
1. (1 mark) Fitting the regression model with total income (totalInc) as the
response and community population (population) as the explanatory variables
we obtain the following summa
Statistics 302 Homework 2 Solutions
Chapter 5, #10 (7 marks)
a) (3 marks) The estimated slope is 0.998 and the estimated intercept is 7.491
taken from the computer output below. The scatterplot with regression line is
also shown.
3.2
3.0
2.8
2.4
2.6
LOGSU