Standard deviation measures how far numbers in a data set are spread out from an average value. In investing, it is used as a measurement of portfolio volatility.

There are two main types of control charts that utilize the mean and standard deviation as some of the quality determinant parameters. Control charts that display attribute data count the number ...

A low-cost monitor can visually indicate a process problem, such as a failed cabinet fan or other high- or low-temperature characteristic. The microcontroller-based circuit in Figure 1 provided a ...

The code then evaluates the input-voltage deviation from the mean and applies scaled boundaries to a corresponding display format. The processor monitors both the input under test and a second analog ...