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1. |
You have scores of 62, 75, and 90 on three of your history exams. What do you need to get on your fourth exam for a mean of 80? |
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A. |
97 |
B. |
100 |
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C. |
80 |
D. |
93 |
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Hint |
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2. |
If the number 178,651 is rounded to 179,000 and plotted on a stem-and-leaf plot as 17|9, how would you display 151,205? |
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A. |
151|2 |
B. |
15|2 |
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C. |
1|51 |
D. |
15|1 |
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Hint |
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3. |
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 increases, the value of y increases. |
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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 is negative, the value of y negative. |
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4. |
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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5. |
How do the medians of the two sets of exam scores compare? |
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A. |
The answer cannot be determined since the median is not shown in a box and whisker plot. |
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B. |
The medians are equal. |
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C. |
The median of Exam A is greater than the median of Exam B. |
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D. |
The median of Exam A is less than the median of Exam B. |
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Hint |
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6. |
The circle graph shows the percent of Ms. Jackson's students who earned an ''A'' for each of the four grading periods during a school year. If Ms. Jackson taught 150 total students, how many students earned an ''A'' during the fourth quarter? |
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A. |
48 |
B. |
27 |
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C. |
60 |
D. |
15 |
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Hint |
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7. |
Rico took a survey to find out the number of family members in each of his classmates' households. The results of the survey are shown in the graph. How many total people responded to the survey? |
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A. |
85 |
B. |
95 |
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C. |
100 |
D. |
90 |
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Hint |
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8. |
Rico took a survey to find out the number of family members in each of his classmates' households. The results of the survey are shown in the graph. How many more students said they have 4 family members in their household than 5? |
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A. |
5 |
B. |
15 |
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C. |
20 |
D. |
10 |
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Hint |
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9. |
Rico took a survey to find out the number of family members in each of his classmates' households. The results of the survey are shown in the graph. How many students responded with an answer of 2 or 3 family members? |
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A. |
5 |
B. |
20 |
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C. |
45 |
D. |
25 |
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Hint |
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10. |
Which relationship would most likely have no correlation? |
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A. |
A person's age, and the address of the person. |
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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. |
The number of miles driven, and the number of gallons of gas in the car. |
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Hint |
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11. |
Based on the data, how many students scored a B or better? |
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A. |
9 |
B. |
17 |
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C. |
13 |
D. |
4 |
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Hint |
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12. |
In a factory, every tenth product out of 200 is quality tested. What kind of sampling is represented? |
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A. |
Cluster Sampling |
B. |
Random Sampling |
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C. |
Systematic Sampling |
D. |
Convenience Sampling |
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Hint |
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13. |
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. |
Cluster Sampling |
B. |
Convenience Sampling |
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C. |
Systematic Sampling |
D. |
Random Sampling |
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Hint |
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14. |
Which club has the lowest total membership? |
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A. |
Computer |
B. |
Yearbook |
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C. |
Chess |
D. |
Science |
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Hint |
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15. |
Find the range of {120, 42, 62, 44, 20, 42, 112}. |
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A. |
63 |
B. |
42 |
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C. |
100 |
D. |
44 |
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Hint |
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16. |
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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17. |
Based on the stem-and-leaf plot, what is the mode? |
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A. |
91 |
B. |
62 |
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C. |
93 |
D. |
74 |
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Hint |
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18. |
Using the line graph, how much more was the price of a gallon of gas in June than September? |
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A. |
$0.30 |
B. |
$2.70 |
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C. |
$1.50 |
D. |
$1.20 |
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Hint |
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19. |
Using the box-and-whisker plot, what is the median of Exam B? |
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A. |
90 |
B. |
75 |
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C. |
60 |
D. |
83 |
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Hint |
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20. |
Using the box-and-whisker plot, what is the third quartile of Exam B? |
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A. |
88 |
B. |
50 |
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C. |
90 |
D. |
95 |
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Hint |
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