Control charts usually present a graphic display of process stability and/or instability with time, from which the you can determine mean and standard deviation.

How to Make a Curved Chart for Standard Deviation in Excel. Using Microsoft Excel you can create charts based on the data and formulas entered in a worksheet. Enter a sample range of numbers in ...

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