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1. |
The median is the _________ of a set of numbers. |
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A. |
highest number |
B. |
most frequent |
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C. |
middle number |
D. |
average |
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Hint |
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2. |
Which relationship would most likely have a positive correlation? |
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A. |
the number of tickets sold for a baseball game, and the number of hotdogs sold at the game. |
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B. |
the number of miles driven, and the number of gallons of gas in the car. |
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C. |
the rate at which a train travels, and the time it takes for it to reach its destination. |
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D. |
the amount of memory in computer, and the number of keys on the keyboard. |
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Hint |
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3. |
A line of best-fit should not be drawn for which of the following graphs. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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4. |
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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5. |
Use the flowchart to backtrack and find the solution. |
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 |
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A. |
8 |
B. |
9 |
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C. |
18 |
D. |
7 |
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Hint |
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6. |
Which scatter plot shows that x and y have a negative correlation? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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7. |
What are the dimensions of the matrix ? |
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A. |
3 × 2 |
B. |
2 × 3 |
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C. |
4 × 2 |
D. |
6 |
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Hint |
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8. |
Find B – A. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
impossible |
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Hint |
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9. |
Which of the following frequencies occurs most often? |
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A. |
12 |
B. |
10 |
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C. |
8 |
D. |
14 |
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Hint |
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10. |
Find the range of the data. |
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A. |
23 |
B. |
61 |
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C. |
42.5 |
D. |
19.5 |
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Hint |
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11. |
Baseball players are trying to show that they deserve more money. Their owner is paying 10 of them $1 million, 8 of them $2 million, and 3 of them $15 million. To support their case, which measure of central tendency should they use? |
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A. |
mean |
B. |
standard deviation |
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C. |
median |
D. |
mode |
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Hint |
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12. |
In a factory, every fifth product out of 100 is quality tested. What kind of sampling is represented? |
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A. |
Convenience Sampling |
B. |
Systematic Sampling |
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C. |
Cluster Sampling |
D. |
Random Sampling |
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Hint |
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13. |
Find the range of {120, 42, 62, 44, 20, 42, 112}. |
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A. |
100 |
B. |
63 |
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C. |
42 |
D. |
44 |
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Hint |
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14. |
What is the range of the stem-and-leaf plot? |
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 |
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A. |
84 |
B. |
77 |
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C. |
67 |
D. |
71 |
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Hint |
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15. |
Find the mean of the data in the stem-and-leaf plot. |
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A. |
78 |
B. |
99 |
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C. |
67 |
D. |
77 |
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Hint |
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16. |
Using the box-and-whisker plot, what is the median of Exam B? |
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A. |
75 |
B. |
90 |
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C. |
60 |
D. |
83 |
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Hint |
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17. |
Using the box-and-whisker plot, what is the least value of the data for exam A? |
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A. |
83 |
B. |
65 |
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C. |
45 |
D. |
50 |
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Hint |
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18. |
Using the box-and-whisker plot, what is the first quartile of Exam B? |
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A. |
83 |
B. |
72 |
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C. |
63 |
D. |
75 |
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Hint |
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19. |
What appears to happen in the graph? |
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A. |
Sales have cut in half each month. |
B. |
Sales have slightly increased. |
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C. |
Sales have dropped. |
D. |
Sales have doubled each month. |
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Hint |
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20. |
Why is the graph misleading? |
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A. |
Scale should be smaller. |
B. |
Months are out of order. |
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C. |
Scale is not at even intervals. |
D. |
The dimensions other than height have changed. |
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Hint |
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