Related Topics:

Spreadsheet Mathematical Functions

Function Wizard Functions

STDEV

Description: Estimates standard deviation based on a sample. Non-numeric values are ignored. The standard deviation is a measure of how widely values are dispersed from the average value (the mean).

Syntax: STDEV(Number1, Number2, ...)

Remarks:

where x is the sample mean AVERAGE(Number1, Number2,…) and n is the sample size.

Example:

Suppose 10 tools stamped from the same machine during a production run are collected as a random sample and measured for breaking strength. The sample values (1345, 1301, 1368, 1322, 1310, 1370, 1318, 1350, 1303, 1299) are stored in A2:E3, respectively. STDEV estimates the standard deviation of breaking strengths for all the tools.

 

© 1992-2013. ReliaSoft Corporation. ALL RIGHTS RESERVED.