| |
| |
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? |
| |
|
A. |
97 |
B. |
80 |
| |
|
C. |
100 |
D. |
93 |
| |
|
Hint |
|
| |
2. |
The median is the _________ of a set of numbers. |
| |
|
A. |
average |
B. |
highest number |
| |
|
C. |
most frequent |
D. |
middle number |
| |
|
Hint |
|
| |
3. |
Find the range of {5, 21, 2, 14, 13}. |
| |
|
A. |
19 |
B. |
65 |
| |
|
C. |
14 |
D. |
13 |
| |
|
Hint |
|
| |
4. |
Which relationship would most likely have a positive correlation? |
| |
|
A. |
the amount of memory in computer, and the number of keys on the keyboard. |
| |
|
B. |
the number of miles driven, and the number of gallons of gas in the car. |
| |
|
C. |
the rate at which a train travels, and the time it takes for it to reach its destination. |
| |
|
D. |
the number of tickets sold for a baseball game, and the number of hotdogs sold at the game. |
| |
|
Hint |
|
| |
5. |
Make a flowchart for the expression. . |
| |
|
A. |
 |
| |
|
B. |
 |
| |
|
C. |
 |
| |
|
D. |
 |
| |
|
Hint |
|
| |
6. |
Which scatter plot shows that x and y have a positive correlation? |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
7. |
Which scatter plot shows that x and y have a negative correlation? |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
8. |
Which relationship would most likely have a negative correlation? |
| |
|
A. |
The number of miles driven, and the number of gallons of gas in the car. |
| |
|
B. |
The number of pizzas ordered, and the total price of the bill. |
| |
|
C. |
A person's height and the person's shoe size. |
| |
|
D. |
A person's age, and the address of the person. |
| |
|
Hint |
|
| |
9. |
Which of the following is not necessarily considered a part of the population? |
| |
|
A. |
census |
B. |
biased sample |
| |
|
C. |
the data collector |
D. |
random sample |
| |
|
Hint |
|
| |
10. |
What are the dimensions of the matrix ? |
| |
|
A. |
6 |
B. |
3 × 2 |
| |
|
C. |
2 × 3 |
D. |
4 × 2 |
| |
|
Hint |
|
| |
11. |
Find the mode of {2, 4, 14, 2, 12, 10, 4, 14, 2}. |
| |
|
A. |
4 |
B. |
No mode |
| |
|
C. |
14 |
D. |
2 |
| |
|
Hint |
|
| |
12. |
What is the mode of the number of rainy days each month? |
| |
|
 |
| |
|
A. |
7 |
B. |
6 |
| |
|
C. |
5 |
D. |
8 |
| |
|
Hint |
|
| |
13. |
Which relationship will most likely have a positive correlation? |
| |
|
A. |
Rising temperatures and ski equipment sales. |
| |
|
B. |
Battery power of a flashlight, and continued use of the flashlight. |
| |
|
C. |
A person's height and a person's eye color. |
| |
|
D. |
Increasing snow inches, and sled sales. |
| |
|
Hint |
|
| |
14. |
Which relationship will most likely have a no correlation? |
| |
|
A. |
Increasing snow inches, and sled sales. |
| |
|
B. |
Rising temperatures and ski equipment sales. |
| |
|
C. |
Battery power of a flashlight, and continued use of the flashlight. |
| |
|
D. |
A person's height and a person's eye color. |
| |
|
Hint |
|
| |
15. |
What is the third quartile of {2, 5, 13, 21, 29}? |
| |
|
A. |
20 |
B. |
27 |
| |
|
C. |
25 |
D. |
18 |
| |
|
Hint |
|
| |
16. |
Find the median of the data. |
| |
|
 |
| |
|
A. |
25 |
B. |
29.5 |
| |
|
C. |
61 |
D. |
30 |
| |
|
Hint |
|
| |
17. |
Why is the graph misleading? |
| |
|
 |
| |
|
A. |
Months are out of order. |
B. |
Scale should be smaller. |
| |
|
C. |
The dimensions other than height have changed. |
D. |
Scale is not at even intervals. |
| |
|
Hint |
|
| |
18. |
What appears to happen in the graph? |
| |
|
 |
| |
|
A. |
Production has decreased slightly. |
B. |
Production has doubled each month. |
| |
|
C. |
Production increased each month. |
D. |
Production dropped in half each month. |
| |
|
Hint |
|
| |
19. |
What is B – C? |
| |
|
 |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
20. |
What is B + C? |
| |
|
 |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
|
|