Stdev() returns the standard deviation of the values given by the expression over a number of records as defined by a group by clause.
Syntax:
Stdev([distinct] expr)
Return data type: numeric
Arguments:
| Argument | Description |
|---|---|
| expr | The expression or field containing the data to be measured. |
| distinct | If the word distinct occurs before the expression, all duplicates will be disregarded. |
Examples and results:
Add the example script to your app and run it. Then build a straight table with Type and MyStdev as dimensions.
| Example | Result |
|---|---|
|
Table1: crosstable LOAD recno() as ID, * inline [ Observation|Comparison 35|2 40|27 12|38 15|31 21|1 14|19 46|1 10|34 28|3 48|1 16|2 30|3 32|2 48|1 31|2 22|1 12|3 39|29 19|37 25|2 ] (delimiter is '|'); Stdev1: LOAD Type, Stdev(Value) as MyStdev Resident Table1 Group By Type; |
The results of the Stdev() calculation are:
|