Learn the standard deviation formula, how to calculate it, and its importance in data analysis. Step-by-step guide with examples.

Weighting is a function of the sample size of each group. The larger the sample size, the greater the proportional effect will be on the overall estimate of the standard deviation.

Key Points Short-term standard deviation is best used for Cp and Cpk. When calculating Pp and Ppk, the long-term standard deviation is your best choice. These measurements are commonly confused ...