 |
| 1 | |
The mean and the mode are the two most common averages used to represent an entire group of numbers. |
| | A) | True |
| | B) | False |
|
|
|
| 2 | |
The median never includes extreme values when finding the center of the data. |
| | A) | True |
| | B) | False |
|
|
|
| 3 | |
A weighted mean could be used for values appearing more than once. |
| | A) | True |
| | B) | False |
|
|
|
| 4 | |
There is no mode if all numbers are different. |
| | A) | True |
| | B) | False |
|
|
|
| 5 | |
Bar graphs cannot show changes that have a occurred over time. |
| | A) | True |
| | B) | False |
|
|
|
| 6 | |
The mean of the following is: 15,8,2,5,6 |
| | A) | 9.9 |
| | B) | 10.0 |
| | C) | 10.2 |
| | D) | 10.1 |
| | E) | None of the above |
|
|
|
| 7 | |
Find the median from the following numbers: 15,5,6,9,2,8 |
| | A) | 6 |
| | B) | 7 |
| | C) | 8 |
| | D) | 15 |
| | E) | None of the above |
|
|
|
| 8 | |
Lois Long received 3 A's and 1 B in her college courses. What is her grade point average? Assume each course is 3 credits. A=4, B=3, C=2, D=1 |
| | A) | 3.50 |
| | B) | 3.75 |
| | C) | 3.00 |
| | D) | 2.80 |
| | E) | None of the above |
|
|
|
| 9 | |
Today the price of a jeep is $19,000. In 1970 the price was $2,000. What is the price relative? |
| | A) | 950 |
| | B) | 850 |
| | C) | 750 |
| | D) | 650 |
| | E) | None of the above |
|
|
|
| 10 | |
Index numbers are compared with the base number which is taken as: |
| | A) | 1 |
| | B) | 100 |
| | C) | 1,000 |
| | D) | None of the above |
|
|
|
| 11 | |
The standard deviation measures: |
| | A) | The mode |
| | B) | The spread of data around the mean |
| | C) | The medium |
| | D) | All bar graphs |
| | E) | None of the above |
|
|
|
| 12 | |
Calculate the range for the following numbers: 2, 15, 8, 4, 9 |
| | A) | 2 |
| | B) | 15 |
| | C) | 13 |
| | D) | 17 |
| | E) | None of the above |
|
|
|
| 13 | |
The standard deviation for 2, 15, 8, 4, 9 is: |
| | A) | 8 |
| | B) | 101.2 |
| | C) | 25.3 |
| | D) | 5.03 |
| | E) | None of the above |
|
|
|
| 14 | |
Normal distributions are symmetrical about the mean. |
| | A) | True |
| | B) | False |
|
|
|
| 15 | |
A battery has a useful life of 10 hours and is normally distributed with a standard deviation of 1 hour. Calculate the useful life of the battery with two standard deviations of the mean: |
| | A) | 8 and 12 hours |
| | B) | 9 and 11 hours |
| | C) | 10 and 12 hours |
| | D) | 10 and 11 hours |
| | E) | None of the above |
|
|
.