Mean and Standard Deviation
Tutor Marked Assignment 1
Complete this question and pass your answer to your tutor for marking.
| The table shows how many minutes, to the nearest tenth
of a minute, it took for a task to be completed by a number of clerical
staff.
Calculate the mean and standard deviation of the data.
|
| Time
(min) |
No.
of staff |
| 10.0
- 10.4 |
5 |
| 10.5
- 10.9 |
12 |
| 11.0
- 11.4 |
23 |
| 11.5
- 11.9 |
10 |
| 12.0
- 12.4 |
5 |
| 12.4
- 12.9 |
2 |
| 13.0
- 13.4 |
1 |
| TOTAL |
58 |
|
|