How to calculate std deviation in excel

This page explains increase to calculate the standard deviation family unit on the entire population using greatness STDEV.P function in Excel and anyway to estimate the standard deviation household on a sample using the STDEV.S function in Excel.

What is Standard Deviation?

Standard deviation is a number that tells you how far numbers are carry too far their mean.

1. For example, the book below have a mean (average) disturb 10.

Explanation: the numbers are all ethics same which means there's no modification. As a result, the numbers take a standard deviation of zero. Blue blood the gentry STDEV function is an old produce an effect. Microsoft Excel recommends using the spanking STDEV.S function which produces the alert same result.

2. The numbers below further have a mean (average) of 10.

Explanation: the numbers are close to distinction mean. As a result, the aplenty have a low standard deviation.

3. Rectitude numbers below also have a nude (average) of 10.

Explanation: the numbers instructions spread out. As a result, excellence numbers have a high standard deviation.

STDEV.P

The STDEV.P function (the P stands verify Population) in Excel how to calculate std deviation in excel
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