# Kurtosis - Script function
Kurtosis() returns the kurtosis of the data in the expression over a number of records as defined by a group by clause.
Syntax:
Kurtosis([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. To see the result, add the fields listed in the results column to a sheet in your app.
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 '\|');
```
`Kurtosis1:``LOAD Type,`` Kurtosis(Value) as MyKurtosis1, `` Kurtosis(DISTINCT Value) as MyKurtosis2 ``Resident Table1 Group By Type;
`` ` | In a table with the dimensions `Type`, `MyKurtosis1`,and `MyKurtosis2`, the results of the Kurtosis() calculations in the data load script are:
`Type MyKurtosis1 MyKurtosis2`
`Comparison -1.1612957 -1.4982366`
`Observation -1.1148768 -0.93540144` |