Skew - script function

Skew() returns the skewness of expression over a number of records as defined by a group by clause.

Syntax:

Skew([ distinct] expr)

Return data type: numeric

Arguments:

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 MySkew as dimensions.

Example Result

Resulting data
Example	Result
`Table1: Crosstable (Type, Value) 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;	The results of the Skew() calculation are: Type is MySkew Comparison is 0.86414768 Observation is 0.32625351

Table1:
Crosstable (Type, Value)
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;

The results of the Skew() calculation are:

Type is MySkew
Comparison is 0.86414768
Observation is 0.32625351

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