Estimated Standard Deviation
[!def] Formula of Estimated Standard Deviation
$$
\sigma = \sqrt(\frac{\sum (x-\mu)^2}{N-1})
$$
- Estimated Standard deviation is also square-root of Estimated Variance
[!def] Formula of Estimated Standard Deviation
$$
\sigma = \sqrt(\frac{\sum (x-\mu)^2}{N-1})
$$