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1. |
Write the stems that would be used in a stem-and-leaf plot for the data.
28 32 38 30 31 13 36 35
38 27 14 29 32 28 27 15 |
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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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2. |
Determine the range of the set of data.
11 21 30 29 7 26
18 12 3 10 12 15 |
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A. |
13.5 |
B. |
16.17 |
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C. |
12 |
D. |
27 |
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Hint |
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3. |
An arrangement where order is not important is called a(n) |
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A. |
permutation. |
B. |
outcome. |
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C. |
combination. |
D. |
factorial. |
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Hint |
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4. |
Suppose there are 8 runners in a race. How many ways can awards for 1st, 2nd, 3rd, and 4th places be presented? |
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A. |
40,320 |
B. |
24 |
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C. |
1680 |
D. |
70 |
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Hint |
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5. |
Two number cubes are rolled twice. What is the probability of rolling a sum of at least 6 then rolling doubles? |
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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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6. |
A red number cube and a blue number cube are tossed. Determine the probability of the red number cube showing a 3 and the blue number cube showing a 6. |
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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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7. |
The stem-and-leaf plot lists the heights of 37 children. What is the difference between the shortest and tallest child? |
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A. |
32 cm |
B. |
23 cm |
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C. |
39 cm |
D. |
3 cm |
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Hint |
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8. |
Find the interquartile range of
{15, 16, 17, 5, 2, 20, 18, 20, 4, 11, 19, 11, 13}. |
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A. |
15 |
B. |
18 |
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C. |
18.5 |
D. |
10.5 |
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Hint |
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9. |
The box-and-whisker plot represents the test scores of 25 students. Half of the students scored under what number? |
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A. |
65 |
B. |
100 |
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C. |
55 |
D. |
79 |
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Hint |
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10. |
The box-and-whisker plot represents the test scores of 25 students. What percent of the scores were between 88.5 and 65? |
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A. |
100% |
B. |
75% |
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C. |
50% |
D. |
25% |
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Hint |
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11. |
According to the histogram, which month has the least births? |
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A. |
June |
B. |
March |
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C. |
October |
D. |
August |
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Hint |
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12. |
According to the histogram, which interval has the least births? |
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A. |
January-March |
B. |
October-December |
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C. |
July-September |
D. |
April-June |
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Hint |
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13. |
Which statement is true? |
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A. |
Tuesday's income was a 300% increase from Monday's income. |
B. |
Thursday's income was a 30% increase from Wednesday's income. |
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C. |
Friday's income was a 17% decrease from Thursday's income. |
D. |
Wednesday's income was a 40% decrease from Tuesday's income. |
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Hint |
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14. |
Select the correct statement. |
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A. |
Friday's income is 1.1 times Monday's income. |
B. |
Thursday's income is 0.42 times Monday's income. |
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C. |
Tuesday's income is 3 times Monday's income. |
D. |
Wednesday's income is 0.71 times Monday's income. |
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Hint |
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15. |
If three coins are tossed, what is the probability of tossing two heads and one tail? |
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A. |
 |
B. |
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C. |
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D. |
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Hint |
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16. |
What is the probability of winning a lottery game where the winning number is made up of three digits from 0 to 9 chosen at random and the numbers may repeat? |
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A. |
 |
B. |
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C. |
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D. |
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Hint |
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17. |
Two number cubes are rolled, find the odds of a sum greater than nine. |
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A. |
1:5 |
B. |
1:8 |
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C. |
1:6 |
D. |
13:5 |
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Hint |
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18. |
If a deck of ten cards numbered 1 to 10 is used, what are the odds of randomly drawing a card whose value is a multiple of three? |
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A. |
1:4 |
B. |
1:9 |
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C. |
3:10 |
D. |
3:7 |
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Hint |
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