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Standard deviation is an important measure of spread or dispersion. It tells us how far, on average the results are from the mean. Therefore if the standard deviation is small, then this tells us that ...

Microsoft Excel is a popular platform that consists of features, such as calculation, graphing tools, pivot tables, and a macro programming language known as Visual Basic for Application (VBA). Users ...

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 ...