Excel-handleiding

How to Calculate Standard Deviation in Excel

Standard deviation measures how spread out numbers are from their average. Use STDEV.S for sample data and STDEV.P for entire population data.

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1
Prepare your data
Enter your numerical data set into a single column or row in your worksheet.
2
Select a cell for the result
Click on the empty cell where you want the standard deviation value to appear.
3
Enter the function
Type '=STDEV.S(range)' for a sample or '=STDEV.P(range)' for a population, replacing 'range' with your data cells, then press Enter.

=STDEV.S(A1:A10) or =STDEV.P(A1:A10)

Use STDEV.S if your data is just a subset of a larger group; use STDEV.P if you have data for every member of the group.

What is the difference between STDEV.S and STDEV.P?

STDEV.S calculates standard deviation based on a sample, while STDEV.P calculates it based on the entire population.