So when we want to find the standard deviation of {1,2,2,3,5} we do
http://controls.engin.umich.edu/wiki/images/math/0/0/6/00665fe48315006861c0755b6081bc49.png
why do we need to square and then square root the numbers?
why is it so cool to square numbers? (in terms of finding the standard deviation)
user668
- 673
- 1
- 6
- 6