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.

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In some applications, a standard value may be available for the process standard deviation .This example shows how you can specify to compute the control limits. title 's Chart for Power Output'; ...

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When to use percent relative standard deviation-and how to do so correctly. Some tools are so useful and intuitive that they achieve widespread acceptance without recommendation. Percent relative ...