Estimates standard deviation based on a sample. The standard deviation is a measure of how widely values are dispersed from the average value (the mean). Text and logical values such as TRUE and FALSE are included in the calculation.
Syntax
STDEVA(value1,value2, ...)
Value1,value2, ... are 1 to 30 values corresponding to a sample of a population.
Remarks
Example
Suppose 10 tools stamped from the same machine during a production run are collected as a random sample and measured for breaking strength.
St1 | St2 | St3 | St4 | St5 | St6 | St7 | St8 | St9 | St10 | Formula | Description (Result) |
---|---|---|---|---|---|---|---|---|---|---|---|
1345 | 1301 | 1368 | 1322 | 1310 | 1370 | 1318 | 1350 | 1303 | 1299 | =STDEVA([St1], [St2], [St3], [St4], [St5], [St6], [St7], [St8], [St9], [St10]) | Standard deviation of breaking strength for all the tools (27.46391572) |