Skew() returns the skewness of expression over a number of records as defined by a group by clause.
Syntax:
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 add, at least, the fields listed in the results column to a sheet in your app to see the result.
| 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 '|'); Skew1: LOAD Type, Skew(Value) as MySkew Resident Table1 Group By Type;
|
In a table with the dimensions Type and MySkew, the results of the Skew() calculation in the data load script are: Type MySkew Comparison 0.86414768 Observation 0.32625351 |