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Chapter 13
Test Description: Basic statistics
Instructions: Answer all questions to get your test result.
1) For the set of data 12, 13, 15, 15, 16, 19 determine the mean.
A
14
B
13
C
15
D
16
2) For the set of data 12, 13, 15, 15, 16, 19 determine the mode.
A
15
B
13
C
14
D
16
3) For the set of data 12, 13, 15, 15, 16, 19 determine the median.
A
14
B
15
C
13
D
16
4) For the set of data 12, 13, 15, 15, 16, 19 determine the range.
A
31
B
15.5
C
10
D
7
5) For the set of data 12, 13, 15, 15, 16, 19 determine the midrange.
A
10
B
15.5
C
31
D
7
6) For the set of data 12, 13, 15, 15, 16, 19 determine the midrange.
A
1.29
B
1.414
C
2.24
D
2.45
7) The average age of students at Tri-County Community College is normally distributed with a mean of 22.1 and a standard deviation of 2.3. What percent of students are between 20 and
A
18.1%
B
29.7%
C
79.7%
D
61.6%
8) The average age of students at Tri-County Community College is normally distributed with a mean of 22.1 and a standard deviation of 2.3. What percent of students are older than 23?
A
39.1%
B
60.9%
C
34.8%
D
65.2%
9) The average age of students at Tri-County Community College is normally distributed with a mean of 22.1 and a standard deviation of 2.3. What percent of students are older than 20.
A
30.4%
B
24.2%
C
69.6%
D
75.8%
10) The average age of students at Tri-County Community College is normally distributed with a mean of 22.1 and a standard deviation of 2.3. What percent of students are younger than 25.5?
A
93.1%
B
6.9%
C
75.8%
D
43.1%
*select an answer for all questions
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