How to calculate Standard Deviation in Excel The Standard Deviation is a term used in statistics. The term describes how much the numbers if a set of data vary from the mean.

Key Points Use Excel to calculate daily returns and standard deviation to gauge stock volatility. Annualize volatility by multiplying daily standard deviation by the square root of 252.

\begin {aligned} &\text {stderror} = \text { std ( data ) / sqrt ( length ( data ))}\\ &\textbf {where:}\\ &\text {data} = \text {An array with sample values}\\ &\text {std} = \text {The MATLAB ...