In the previous exercise you found the variance of these particular values:
The standard deviation is the square root of this:
Starting from scratch the working would be:
|
5 |
4 |
3 |
2 |
5 |
5 |
The formula is:
The mean was calculated previously, and equals 4.
| i |
|
|
|
| 1 |
5 |
1 |
|
| 2 |
4 |
0 |
|
| 3 |
3 |
1 |
|
| 4 |
2 |
4 |
|
| 5 |
5 |
1 |
|
| 6 |
5 |
1 |
|
|
|
4 |
|
8 |
|
|
1.26 |
||
