Learn how to calculate Standard Deviationin Excel. The STDEV function can be used to estimate standard deviation based on sample in Excel.

With that, Excel can generate a series of random numbers based on the data entered and the standard deviation. With this data you can then create a curved chart, known as a bell curve.

Pooled standard deviation is a useful tool when analyzing data sets. It is especially helpful when you’ve taken the time to properly weigh your standard deviations so everything is in balance.