+1713 I learned it using steps like above but you would continue it like this(found my math textbook yay)
:
| x | mean | x-mean | (x-mean)^2 |
| 3 | 4 | -1 | 1 |
| 2 | 4 | -2 | 4 |
| 4 | 4 | 0 | 0 |
| 7 | 4 | 3 | 9 |
| I knew this | I knew this | I knew this | I figured it out right now |
Then you have to find the mean of the last column
(1+4+0+9)/4
14/4
7/2
then square root that to get
sqrt(7/2)
and the answers sqrt(7/2)
which is around 1.87
(Textbook way, no formula...)
I think This problem was categorized terribly as it accepts the population answer.
