Name
KEY
ID
ECON 2843
Fall 2006
Quiz 1
Students must show all work on problems that involve calculation, even if the question is multiple
choice.
Questions 1 through 4 refer to the following:
Average points scored per game were found for a sample size of 12 for 2005 NBA basketball
players and classified as follows:
cumulative
Average points scored relative
per game
frequency
0 –
5
1/6
5 – 10
7/12
10 – 15
5/6
15 – 20
1
1. What is the mean points per game for this sample?
a. 8
b. 9.5833 *
c.
11.2956
d. 23
e.
40
2. What is the variance of the points per game for this sample?
a.
4.77
b.
4.98
c.
22.74
d.
24.81
*
e.
272.92
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View Full Document3. If one of the sample observations is selected randomly, what is the probability that the
player will score less points per game than the median class?
a. 1/6
*
b. 3/7
c.
3/5
d. 2/3
e.
5/6
4. What is the cumulative frequency of the class 10 – 15 ?
a. 5/6
b. 3
c.
10
*
d. 12
e.
31
5. The sample distribution appears to be
a. symmetric.
b. skewed right.
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 Spring '08
 HUDGINS
 Standard Deviation, Mean, a. b. c.

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