Standard deviation describes how much variability—or fluctuation—exists within a data set. The standard error of the mean (SEM) indicates how accurately a data set represents the true population by ...

While Excel is useful for many applications, it is an indispensable tool for those managing statistics. Two common terms used in statistics are Standard Deviation and ...

Reviewed by Eric Estevez It's possible to calculate the standard error in MATLAB by running a one-line command. Standard ...

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 ...