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'; ...

title 'Specifying Standard Process Mean and Standard Deviation'; symbol v=dot c=yellow; proc macontrol data=clips1; machart gap*day / mu0 = 15 sigma0 = 0.2 span = 4 ...

Brian Beers is a digital editor, writer, Emmy-nominated producer, and content expert with 15+ years of experience writing about corporate finance & accounting, fundamental analysis, and investing.

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Somer G. Anderson is CPA, doctor of ...

Flickr via Google Images Standard deviation is a concept that's thrown around frequently in finance. So what is it? When working with a quantitative data set, one of the first things we want to know ...

In response to my article, Is the Stock Market Too Concentrated?, which relied upon standard-deviation calculations to assess investment risk, a reader wrote: “My problem [with your argument] is ...