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1. |
What is implied when it is said that x and y have a negative correlation? |
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A. |
When the value of x is negative, the value of y negative. |
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B. |
When the value of x increases, the value of y does not necessarily increase or decrease. |
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C. |
When the value of x increases, the value of y decreases. |
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D. |
When the value of x increases, the value of y increases. |
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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 of the following would not be a sample from a population set of all of the farms in Nebraska? |
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A. |
25 houses with pets are selected from any part of the state. |
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B. |
The farms are split into groups based on what they produce, and then 4 are selected from each group. |
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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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4. |
Find  . |
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A. |
impossible |
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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. |
How many measurement classes are represented on the histogram? |
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A. |
70 |
B. |
14 |
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C. |
44 |
D. |
9 |
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6. |
Find the median of the data. |
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A. |
23 |
B. |
42.5 |
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C. |
19.5 |
D. |
29.5 |
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Hint |
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7. |
In a factory, every fifth product out of 100 is quality tested. What kind of sampling is represented? |
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A. |
Cluster Sampling |
B. |
Convenience Sampling |
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C. |
Random Sampling |
D. |
Systematic 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. |
42 |
B. |
100 |
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C. |
44 |
D. |
63 |
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Hint |
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9. |
Find the mean of the data in the stem-and-leaf plot. |
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A. |
67 |
B. |
99 |
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C. |
77 |
D. |
78 |
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Hint |
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10. |
Which relationship will most likely have a no correlation? |
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A. |
Increasing snow inches, and sled sales. |
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B. |
Rising temperatures and ski equipment 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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11. |
Which relationship will most likely have a no correlation? |
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A. |
The number of hours of sleep a person gets per night and the person's shoe size. |
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B. |
Battery power of a flashlight, and continued use of the flashlight. |
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C. |
Rising temperatures and ski equipment sales. |
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D. |
Increasing snow inches, and sled sales. |
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Hint |
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12. |
What is the third quartile of {2, 5, 13, 21, 29}? |
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A. |
18 |
B. |
25 |
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C. |
20 |
D. |
27 |
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Hint |
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13. |
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. |
35 |
D. |
77 |
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Hint |
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14. |
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. |
Change the graph from vertical to horizontal. |
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C. |
Color should be added. |
D. |
Change the vertical scale so that the maximum value is 100. |
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Hint |
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15. |
What appears to happen in the graph? |
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A. |
Production increased each month. |
B. |
Production has doubled each month. |
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C. |
Production has decreased slightly. |
D. |
Production dropped in half each month. |
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Hint |
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16. |
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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