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1. |
Find the mode of {325, 100, 115, 621, 325, 325, 100}. |
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A. |
115 |
B. |
325 |
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C. |
273 |
D. |
100 |
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Hint |
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2. |
The median is the _________ of a set of numbers. |
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A. |
highest number |
B. |
most frequent |
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C. |
average |
D. |
middle number |
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Hint |
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3. |
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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4. |
Which scatter plot shows that x and y have a positive correlation? |
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A. |
 |
B. |
 |
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C. |
 |
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. |
The number of miles driven, and the number of gallons of gas in the car. |
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B. |
The number of pizzas ordered, and the total price of the bill. |
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C. |
A person's height and the person's shoe size. |
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D. |
A person's age, and the address of the person. |
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Hint |
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6. |
How many measurement classes are represented on the histogram? |
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 |
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A. |
44 |
B. |
14 |
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C. |
9 |
D. |
70 |
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Hint |
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7. |
Which measure of variation does not depend on the mean? |
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A. |
mode |
B. |
standard deviation |
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C. |
range |
D. |
variance |
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Hint |
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8. |
What kind of sampling is represented if dentists from random areas of the city are asked about their favorite toothpaste? |
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A. |
Systematic Sampling |
B. |
Convenience Sampling |
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C. |
Random Sampling |
D. |
Cluster Sampling |
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Hint |
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9. |
What kind of sampling is represented by putting 70 names in a hat and drawing 10 of the names? |
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A. |
Systematic Sampling |
B. |
Random Sampling |
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C. |
Convenience Sampling |
D. |
Cluster Sampling |
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Hint |
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10. |
Which interval has the most values? |
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 |
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A. |
70-80 |
B. |
60-70 |
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C. |
50-60 |
D. |
80-90 |
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Hint |
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11. |
During the month that had three days of rain, how many had above-average temperatures? |
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 |
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A. |
5 |
B. |
8 |
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C. |
3 |
D. |
2 |
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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. |
27 |
D. |
20 |
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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. |
77 |
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C. |
35 |
D. |
25 |
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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. |
Write out the entire names of the months. |
B. |
Change the color. |
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C. |
Change the graph from vertical to horizontal. |
D. |
Make the graph start at 0 to see all of the bars. |
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Hint |
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15. |
What is A + B? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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16. |
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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