When you have the average production of three machines, it is easy to calculate the average or mean production. You just add up the three means and divide by three. But what if I want the average ...

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.

CoV is a simple calculation to measure the variation in your process. Let’s see how to do the calculation, explore an industry application, and answer a few questions about CoV. Overview: What is the ...