Sterr - script function

Sterr() returns the aggregated standard error (stdev/sqrt(n)) for a series of values represented by the expression iterated over a number of records as defined by a group by clause.

Syntax:  

Sterr ([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.

Limitations:  

Text values, NULL values and missing values are disregarded.

Examples and results:  

Add the example script to your document and run it. Then add, at least, the fields listed in the results column to a sheet in your document 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 '|');

 

Sterr1:

LOAD Type,

Sterr(Value) as MySterr

Resident Table1 Group By Type;

In a table with the dimensions Type and MySterr, the results of the Sterr() calculation in the load script are:

Type MySterr

Comparison 3.2674431

Observation 2.7968733