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Question
The following frequency distribution shows the time (in minutes) that a sample of students uses the computer terminals per day.| Time (minutes) | Frequency |
| 20 - 39 | 2 |
| 40 - 59 | 4 |
| 60 - 79 | 6 |
| 80 - 99 | 4 |
| 100 - 119 | 2 |
a. Compute the mean.
b. Compute the variance.
c. Compute the standard deviation.
d. Compute the coefficient of variation.
Answer
This answer is hidden. It contains 29 characters.
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