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1. |
You have scores of 62, 75, and 90 on three of your history exams. What do you need to get on your fourth exam for a mean of 80? |
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A. |
93 |
B. |
80 |
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C. |
97 |
D. |
100 |
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Hint |
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2. |
Make a flowchart for the expression. . |
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A. |
 |
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B. |
 |
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C. |
 |
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D. |
 |
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3. |
Which scatter plot shows that x and y have a positive correlation? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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4. |
Steve needed to find out which classes people liked the most. Therefore, after he arrived at his math club meeting, he asked some people there. What kind of sample is this? |
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A. |
unbiased, random sample |
B. |
unbiased, random stratified sample |
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C. |
biased, voluntary |
D. |
biased, convenience |
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5. |
Find A + C. |
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A. |
 |
B. |
impossible |
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C. |
 |
D. |
 |
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6. |
Find A – C. |
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A. |
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B. |
|
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C. |
 |
D. |
impossible |
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Hint |
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7. |
To ensure healthy food, every tenth item is checked. What kind of sample is this? |
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A. |
Random Sampling |
B. |
Convenience Sampling |
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C. |
Systematic Sampling |
D. |
Cluster Sampling |
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Hint |
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8. |
Find the range of {120, 42, 62, 44, 20, 42, 112}. |
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A. |
100 |
B. |
63 |
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C. |
44 |
D. |
42 |
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Hint |
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9. |
What is the range of the stem-and-leaf plot? |
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 |
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A. |
67 |
B. |
77 |
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C. |
84 |
D. |
71 |
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Hint |
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10. |
Which value occurs most often? |
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A. |
99 |
B. |
71 |
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C. |
84 |
D. |
77 |
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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. |
2 |
B. |
5 |
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C. |
8 |
D. |
3 |
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Hint |
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12. |
Which relationship will most likely have a no correlation? |
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A. |
A person's height and a person's eye color. |
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B. |
Increasing snow inches, and sled sales. |
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C. |
Rising temperatures and ski equipment sales. |
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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. |
Using the box-and-whisker plot, what is the least value of the data for exam A? |
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A. |
45 |
B. |
83 |
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C. |
65 |
D. |
50 |
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Hint |
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14. |
Find the interquartile range of
{61, 65, 65, 66, 72, 75, 77, 79, 81, 85, 89, 92, 99}. |
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A. |
21.5 |
B. |
25 |
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C. |
77 |
D. |
35 |
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Hint |
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15. |
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 cut in half each month. |
D. |
Sales have slightly increased. |
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Hint |
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16. |
What appears to happen in the graph? |
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A. |
Production has decreased slightly. |
B. |
Production dropped in half each month. |
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C. |
Production increased each month. |
D. |
Production has doubled each month. |
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Hint |
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