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1. |
What are the stems that would be used in a stem-and-leaf for the data.
114 101 107 120 93 108 119
127 93 99 114 100 94 125
116 99 101 127 114 110 103 |
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A. |
0, 1 |
B. |
0, 1, 3, 4, 5, 6, 7, 8, 9 |
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C. |
9, 10, 11, 12 |
D. |
8, 9, 10, 11 |
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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. |
27 |
B. |
13.5 |
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C. |
16.17 |
D. |
12 |
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Hint |
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3. |
Determine the interquartile range for the set of data. |
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A. |
10 |
B. |
9 |
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C. |
8.5 |
D. |
1.5 |
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Hint |
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4. |
The spinner below is spun and a number cube is tossed. What is the probability of blue and 4? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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5. |
Four coins are tossed. What is the probability of tossing two heads and two tails in any order? |
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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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6. |
What is C(6, 4)? |
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A. |
15 |
B. |
30 |
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C. |
720 |
D. |
360 |
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Hint |
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7. |
From a class with 12 boys and 15 girls, one student is selected at random. What are the odds in favor of selecting a girl? |
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A. |
4:5 |
B. |
5:9 |
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C. |
5:4 |
D. |
4:9 |
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Hint |
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8. |
There are 5 pennies, 7 nickels, and 9 dimes in a change purse. Suppose 2 coins are selected at random. Find the probability of selecting 2 pennies if the first coin is replaced before the second coin is chosen. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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9. |
Fifty tickets, numbered 1 through 50, are placed in a box. Four tickets are randomly drawn without replacement. What is the probability that 4 odd numbers are drawn? |
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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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10. |
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. |
39 cm |
B. |
32 cm |
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C. |
3 cm |
D. |
23 cm |
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Hint |
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11. |
The box-and-whisker plot represents the test scores of 25 students. What percent of the scores were above 50? |
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A. |
100% |
B. |
50% |
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C. |
25% |
D. |
75% |
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Hint |
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12. |
The box-and-whisker plot represents the test scores of 25 students. What percent of the scores were between 65 and 79? |
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A. |
25% |
B. |
50% |
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C. |
75% |
D. |
100% |
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Hint |
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13. |
According to the histogram, which month has the least births? |
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A. |
October |
B. |
August |
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C. |
June |
D. |
March |
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Hint |
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14. |
According to the histogram, which interval has the least births? |
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A. |
October-December |
B. |
July-September |
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C. |
January-March |
D. |
April-June |
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Hint |
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15. |
Which statement is true? |
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A. |
Wednesday's income was a 40% decrease from Tuesday's income. |
B. |
Thursday's income was a 30% increase from Wednesday's income. |
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C. |
Tuesday's income was a 300% increase from Monday's income. |
D. |
Friday's income was a 17% decrease from Thursday's income. |
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Hint |
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16. |
Select the valid statement. |
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A. |
Monday's income was 25% of Thursday's income. |
B. |
Monday's income was 70% of Tuesday's income. |
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C. |
Monday's income was 90% of Wednesday's income. |
D. |
Monday's income was 50% of Friday's income. |
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Hint |
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17. |
How many ways can a two-color uniform be chosen from red, white, blue, green, and black? |
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A. |
120 |
B. |
10 |
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C. |
25 |
D. |
20 |
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Hint |
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18. |
Two number cubes are rolled, find the odds of a sum greater than nine. |
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A. |
13:5 |
B. |
1:8 |
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C. |
1:6 |
D. |
1:5 |
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Hint |
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