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1. |
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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Hint |
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2. |
Use the flowchart to backtrack and find the solution. |
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A. |
7 |
B. |
18 |
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C. |
8 |
D. |
9 |
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Hint |
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3. |
Which relationship would most likely have no 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. |
A person's height and the person's shoe size. |
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C. |
The number of pizzas ordered, and the total price of the bill. |
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D. |
A person's age, and the address of the person. |
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Hint |
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4. |
Every fifth person that comes out of a library is asked whether they prefer to read a book or watch a movie. Is this biased or unbiased and why? |
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A. |
unbiased, because they are using a systematic random sample |
B. |
unbiased, because the location is not important |
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C. |
biased, because the sample is not representative of everyone in the library |
D. |
biased, because a library loans out primarily books |
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Hint |
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5. |
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. |
standard deviation |
B. |
mode |
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C. |
mean |
D. |
median |
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Hint |
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6. |
In a factory, every fifth product out of 100 is quality tested. What kind of sampling is represented? |
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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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7. |
Which reflects the convenience sampling method that a language arts teacher might use to identify the most popular book read by the language arts students? |
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A. |
Ask students who are wearing a red shirt. |
B. |
Ask all the students in one geometry class. |
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C. |
Ask the first 10 students who walk into the classroom. |
D. |
Ask every third student from the 60 students sitting in a study hall. |
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Hint |
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8. |
To ensure healthy food, every tenth item is checked. What kind of sample is this? |
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A. |
Convenience Sampling |
B. |
Systematic Sampling |
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C. |
Random Sampling |
D. |
Cluster Sampling |
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Hint |
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9. |
What is the range of the stem-and-leaf plot? |
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A. |
77 |
B. |
84 |
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C. |
71 |
D. |
67 |
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Hint |
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10. |
Which interval has the most values? |
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A. |
70-80 |
B. |
80-90 |
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C. |
50-60 |
D. |
60-70 |
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Hint |
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11. |
What is the mode of the number of rainy days each month? |
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A. |
5 |
B. |
7 |
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C. |
6 |
D. |
8 |
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Hint |
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12. |
What is the mode of the number of above-temperature days each month? |
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A. |
8 |
B. |
6 |
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C. |
5 |
D. |
2 |
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Hint |
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13. |
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. |
Battery power of a flashlight, and continued use of the flashlight. |
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C. |
A person's height and a person's eye color. |
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D. |
Increasing snow inches, and sled sales. |
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Hint |
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14. |
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. |
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. |
Rising temperatures and ski equipment sales. |
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Hint |
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15. |
Using the box-and-whisker plot, what is the first quartile of Exam B? |
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A. |
83 |
B. |
75 |
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C. |
72 |
D. |
63 |
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Hint |
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16. |
Find the first quartile of {2, 5, 13, 21, 0, 5, 18, 21, 22, 23, 26, 26, 26}? |
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A. |
5 |
B. |
26 |
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C. |
25 |
D. |
27 |
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Hint |
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17. |
Find the interquartile range of {61, 65, 65, 66, 72, 75, 77, 79, 81, 85, 89, 92, 99}. |
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A. |
35 |
B. |
25 |
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C. |
77 |
D. |
21.5 |
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Hint |
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18. |
What appears to happen in the graph? |
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A. |
Sales have doubled each month. |
B. |
Sales have slightly increased. |
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C. |
Sales have dropped. |
D. |
Sales have cut in half each month. |
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Hint |
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19. |
Why is the graph misleading? |
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A. |
Scale is not at even intervals. |
B. |
Bars appear to have cut in half. |
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C. |
Months are out of order. |
D. |
Color is misleading. |
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Hint |
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20. |
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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