Standard deviation is a metric that shows the variability of a security’s returns over time. It can be used to gauge volatility based on past performance and compare a future return to past returns.

The standard deviation formula There are two main ways to calculate ... and this end result is usually expressed as a percentage. So, that means that monthly returns within one standard deviation ...

Excel can calculate the percentage return on an asset and assess profit and loss. One particularly helpful Excel feature is its ability to calculate standard deviation, a complex formula that ...