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 ...

A cumulative average recalculates a data set's average as new data is added. During the recalculation all data contained in the data set is included in the average. In Microsoft Excel your spreadsheet ...

There are two formulae for standard deviation. \(s = \sqrt {\frac{{\sum {{{(X - \bar X)}^2}} }}{{n - 1}}}\) (where n is the sample size). The second formula is a re ...