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1. |
What is the difference between the highest and the lowest values? |
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A. |
80 |
B. |
84 |
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C. |
100 |
D. |
75 |
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Hint |
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2. |
Find the mean of {3, 8, 10, 1, 25}. |
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A. |
9.4 |
B. |
1 |
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C. |
9 |
D. |
8 |
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Hint |
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3. |
Which scatter plot shows that x and y have no correlation? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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4. |
Find A – C. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
impossible |
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Hint |
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5. |
Find B – A. |
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A. |
impossible |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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6. |
The least number of children fall in which interval? |
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A. |
15-29 months |
B. |
0-14 months |
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C. |
30-44 months |
D. |
cannot be determined |
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Hint |
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7. |
Which measure of variation does not depend on the mean? |
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A. |
standard deviation |
B. |
variance |
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C. |
range |
D. |
mode |
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Hint |
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8. |
Everyone at the stadium is eligible for a drawing at the end of the night. If everyone was given a number, and 10 winners are announced, what kind of sampling is represented? |
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A. |
Systematic Sampling |
B. |
Cluster Sampling |
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C. |
Random Sampling |
D. |
Convenience Sampling |
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Hint |
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9. |
To ensure healthy food, every tenth item is checked. What kind of sample is this? |
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A. |
Cluster Sampling |
B. |
Convenience Sampling |
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C. |
Systematic Sampling |
D. |
Random Sampling |
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Hint |
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10. |
Find the mode of {2, 4, 14, 2, 12, 10, 4, 14, 2}. |
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A. |
4 |
B. |
2 |
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C. |
14 |
D. |
No mode |
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Hint |
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11. |
During the month that had three days of rain, how many had above-average temperatures? |
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A. |
3 |
B. |
2 |
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C. |
5 |
D. |
8 |
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Hint |
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12. |
Which relationship will most likely have a negative correlation? |
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A. |
Increasing snow inches, and sled sales. |
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B. |
The number of movie tickets sold and the amount of popcorn sold. |
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C. |
A person's height and a person's eye color. |
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D. |
Battery power of a flashlight, and continued use of the flashlight. |
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Hint |
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13. |
Which relationship will most likely have a no correlation? |
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A. |
Rising temperatures and ski equipment sales. |
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B. |
Battery power of a flashlight, and continued use of the flashlight. |
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C. |
Increasing snow inches, and sled sales. |
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D. |
A person's height and a person's eye color. |
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Hint |
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14. |
Using the box-and-whisker plot, what is the median of Exam B? |
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A. |
75 |
B. |
60 |
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C. |
83 |
D. |
90 |
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Hint |
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15. |
What percent of data does the box in a box-and-whisker plot represent? |
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A. |
100% |
B. |
25% |
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C. |
50% |
D. |
75% |
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Hint |
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16. |
What appears to happen in the graph? |
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A. |
Sales have dropped. |
B. |
Sales have doubled each month. |
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C. |
Sales have slightly increased. |
D. |
Sales have cut in half each month. |
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Hint |
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