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1. |
Find the mean of {3, 8, 10, 1, 25}. |
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A. |
9.4 |
B. |
8 |
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C. |
1 |
D. |
9 |
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Hint |
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2. |
Which scatter plot shows that x and y have a positive correlation? |
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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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3. |
Which scatter plot shows that x and y have a positive correlation? |
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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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4. |
Which scatter plot shows that x and y have a negative correlation? |
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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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5. |
Which relationship would most likely have a negative correlation? |
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A. |
A person's age, and the address of the person. |
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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. |
A person's height and the person's shoe size. |
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D. |
The number of pizzas ordered, and the total price of the bill. |
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Hint |
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6. |
Which relationship would most likely have no correlation? |
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A. |
The number of pizzas ordered, and the total price of the bill. |
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B. |
A person's age, and the address of the person. |
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C. |
The number of miles driven, and the number of gallons of gas in the car. |
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D. |
A person's height and the person's shoe size. |
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Hint |
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7. |
Which of the following would not be a sample from a population set of all of the farms in Nebraska? |
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A. |
The farms are split into groups based on what they produce, and then 4 are selected from each group. |
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B. |
25 houses with pets are selected from any part of the state. |
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C. |
One farm is selected in each 20 square mile area of the state |
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D. |
12 farms are selected from any part of the state. |
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Hint |
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8. |
Find . |
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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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9. |
A histogram is a graph in which the data are organized into equal _______. |
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A. |
tallies |
B. |
elements |
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C. |
intervals |
D. |
bars |
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Hint |
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10. |
Find the median of the data. |
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A. |
42.5 |
B. |
23 |
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C. |
29.5 |
D. |
19.5 |
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Hint |
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11. |
A baseball owner is trying to convince people that he is spending too much on his players. He is paying 10 of them $1 million, 8 of them $2 million, and 3 of them $15 million. To support his case, which measure of central tendency should he use? |
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A. |
mode |
B. |
mean |
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C. |
standard deviation |
D. |
median |
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Hint |
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12. |
What is the range of the stem-and-leaf plot? |
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A. |
71 |
B. |
67 |
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C. |
84 |
D. |
77 |
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Hint |
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13. |
What is the mode of the number of above-temperature days each month? |
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A. |
5 |
B. |
8 |
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C. |
2 |
D. |
6 |
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Hint |
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14. |
Which relationship will most likely have a negative correlation? |
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A. |
The number of movie tickets sold and the amount of popcorn sold. |
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B. |
Increasing snow inches, and sled sales. |
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C. |
Battery power of a flashlight, and continued use of the flashlight. |
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D. |
A person's height and a person's eye color. |
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Hint |
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15. |
Find the interquartile range of {61, 65, 65, 66, 72, 75, 77, 79, 81, 85, 89, 92, 99}. |
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A. |
77 |
B. |
21.5 |
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C. |
35 |
D. |
25 |
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Hint |
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16. |
Find the first quartile of the data. |
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A. |
25 |
B. |
91 |
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C. |
19.5 |
D. |
29.5 |
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Hint |
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17. |
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. |
The dimensions other than height have changed. |
D. |
Scale is not at even intervals. |
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Hint |
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18. |
How could the graph be changed so it is not misleading? |
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A. |
Diameters of the cans should be the same. |
B. |
Color should be added. |
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C. |
Change the vertical scale so that the maximum value is 100. |
D. |
Change the graph from vertical to horizontal. |
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Hint |
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19. |
What is A + B? |
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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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20. |
What is B – C? |
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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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