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. You can also use a single array or a reference to an array instead of arguments separated by commas.
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.
The example may be easier to understand if you copy it to a blank spreadsheet.
- Create a blank spreadsheet.
- Select the example in the Help topic.
Selecting an example from Help
- Press CTRL+C.
- In the spreadsheet, select cell A1, and press CTRL+V.
- To switch between viewing the formula that returns the result and the result in the cell, select the cell and press F2 and then ENTER, or click Commands and Options on the spreadsheet toolbar, click the Formula tab, and look in the Formula in active cell (active cell) box.
Strength | |
---|---|
1345 | |
1301 | |
1368 | |
1322 | |
1310 | |
1370 | |
1318 | |
1350 | |
1303 | |
1299 | |
Formula | Description (Result) |
=STDEVA(A2:A11) | Standard deviation of breaking strength for all the tools (27.46391572) |