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1. |
Find the standard deviation of the set {4, 7, 3, 8, 2, 6, 5, 8, 3, 2} to the nearest hundredth. |
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A. |
2.00 |
B. |
2.35 |
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C. |
2.46 |
D. |
2.23 |
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Hint |
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2. |
The enrollments at the University of Texas at Austin in some recent years were 47,905, 48,008, 48,857, 48,906, and 49,009. Find the standard deviation of the data. |
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A. |
452.93 |
B. |
434.00 |
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C. |
461.28 |
D. |
477.62 |
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Hint |
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3. |
The scores on a national achievement test are normally distributed with a mean of 50 and a standard deviation of 10. Out of a group of 200 students, how many would you expect to score more than 70? |
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A. |
1 |
B. |
10 |
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C. |
5 |
D. |
32 |
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Hint |
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4. |
Which of the graphs will have the lowest standard deviation? |
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A. |
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B. |
 |
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C. |
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D. |
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Hint |
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5. |
Compute the variance and standard deviation for the set of {3, 4, 4, 7, 9, 9, 12, 16}. Round to the nearest tenth. |
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A. |
16.5; 4.1 |
B. |
4.2; 2.0 |
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C. |
15.8; 4.0 |
D. |
17.5; 4.2 |
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Hint |
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