The basic mathematical concepts of standard deviation and variance are useful to investors. Compare variance versus standard deviation and calculate each.

Standard deviation is a measure of how far away individual measurements tend to be from the mean value of a data set. The standard deviation of company A's employees is 1, while the standard ...

Return, Standard Deviation, ... It is calculated as follows: (standard deviation) / (expected value). The coefficient of variation represents the ratio of the standard deviation to the mean, ...

For example, if your mean is in cell A2, population mean in cell B2, standard deviation in cell C2, square root of degrees of freedom in E2, type the formula as =(A2-B2)/(C2/E2) to generate the T ...

Stock XYZ has volatility, or standard deviation, of 15% and an expected return of 19%. That means the COV is 0.79 (15% ÷ 19%). The broad market index fund DEF has a standard deviation of 8% and ...

This example illustrates how you can compute the average run length of an s chart. The data used here are the power measurements in the data set TURBINE, which is introduced at "Creating Standard ...