How to Use the STDEV function to determine the standard deviation
In this example, the standard deviation of the number of phone calls has to be determined. Use the STDEV function for this purpose. This function measures how widely values in a set differ from the average, or mean, value. Here is the syntax that is used:
STDEV(number1, number2, …)
number1, number2, …: From 1 to 30 numerical arguments that represent a population sample.
To determine the standard deviation for employee phone calls:
- In cells A2:A10 type the names of your employees.
- In cells B2:B10 type the number of phone calls the employees make per month.
- Select cells E2 and type the following formula: =STDEV(B2:B10).
- Press Enter.
This tip is compatible with Excel 97, 2000, 2003 and 2007.
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