Functions Reference

Aggregate functions
F
ILEMAKER PRO FUNCTIONS REFERENCE 26
StDev
Purpose
Returns the standard deviation of the sample represented by a series of non-blank values in a field.
Format
StDev(field{;field...})
Parameters
field - any related field, repeating field, or set of non-repeating fields; or an expression that returns
a field, repeating field, or set of non-repeating fields.
Parameters in braces { } are opt
ional.
Data type returned
number
Originated in
FileMaker Pro 6.0 or earlier
Description
Field can be any of the following:
• a
repeating field (repeatingField).
• a
field in matching related records specified by (table::field), whether or not these
records appear in a
portal.
• sever
al non-repeating fields in a record (field1;field2;field3).
• co
rresponding repetitions of repeating fields in a record
(repeatingField1;repeatingField2;repeatingField3), if the result is r
eturned
in a repeating field with at least the same number of repeats.
• several fields in the first
matching record specified by (table 1::field A, table
2::field B,...). You can name a different
table for each field (table 1::field
A;table 2::field B...).
StDev
x
1
2
x
2
2
… x
n
2
+++
n1–
--------------------------------------------
x
1
x
2
… x
n
+++()
2
nn 1–()
---------------------------------------------------
–=