BUS/ST 350 Spring '07 Final Exam
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BUS/ST 350
FINAL EXAM
Spring 2007 Reiland
N
a
m
e
Lab Section #
ID #
INSTRUCTIONS:
Write your name, lab section #, and ID# above.
Note the statement at the bottom of this page
that you must sign
when you are finished with the exam.
Supply the following information on SIDE ONE of the scantron sheet:
Ê
Enter your name (
) in the "name" section; no nicknames!
FILL IN THE
last name first!
BUBBLES.
Ê
Enter your 3 digit lab section number in the "special code" section. FILL IN THE
BUBBLES.
Ê
Enter your social security number in the "identification number" section. FILL IN THE
BUBBLES.
Ê
IMPORTANT!
Enter the version number (either "1", "2"or "3") of
your copy of the
exam in the section marked "GRADE OR EDUCATION".
The version number of this
test is 1.
BUBBLE IN THIS NUMBER!
There are 25 multiple choice questions.
On the test circle the letter that corresponds to the
answer you select. Also indicate your selection on the opscan sheet.
Use a #2 pencil!
For each wrong answer 4 points will be subtracted from 100.
ì
When you are finished:
ì
separate your scantron sheet from the test!
i)
place your
in the folder labeled with your version of the test
scantron sheet
ii) place the
on the left side of the stage in the appropriate lab
cover page of your test
section stack
GOOD LUCK!!
Statement of academic honesty:
I have neither given assistance to another student nor received assistance from
another student while taking this exam.
Signed
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View Full DocumentBUS/ST 350 Spring '07 Final Exam
page 2
version 1
1.
The least squares regression line is
a.
the line which makes the square of the correlation in the data as large as possible
b.
the line which makes the sum of the squares of the vertical distances of the data points from the
line as small as possible (we called these vertical distances residuals).
c.
the line which best splits the data in half, with half the points above the line and half below the
line.
d.
a and b only
e.
a and c only
In the data shown below, the dependent variable
is the rate of return of an investor's portfolio of
y
stocks during a period and
is the return for stocks included in a stock exchange index during the
x
same period.
12
8
144
96
13
6
169
78
14
4
196
56
15
0
225
0
16
6
256
96
17
12
289
204
18
14
324
252
105
14
1603
3
Index
Portfolio
Return
Return
BB
C
ÐBÑ
ÐCÑ
#
Bœ
Cœ
B œ
BCœ
!!
!
!
#
22
2.
The slope of the least squares line is
a.
4.0
b.
2.75
c.
.477
d.
4.0
e.
2.75
3.
If the sample correlation coefficient
is
.80, then the percentage of variability in the dependent variable
r
C
that is accounted for by the linear relationship between
and
is
CB
a.
36%
b.
80%
c.
64%
d.
20%
e.
cannot be determined
4.
For a community swimming pool in Miami, Florida,
(daily attendance) is found to be related to
(noontime temperature, in degrees Fahrenheit) according to the least squares line
C œ #!! "!B
s
Today's noontime temperature is 5 degrees colder than yesterday's.
Compared to yesterday's estimate of the
number of swimmers, today's estimate will be
a.
50 more
b.
5 less
c.
205 less
d.
50 less
e.
250 less
5.
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 Spring '09
 reiland
 Normal Distribution, Standard Deviation, final exam version

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