Filemaker TH325Z/A Datový list stáhnout pdf (Strana 24)

24 FileMaker Functions Reference

Parameter

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 curly braces { } are optional.

Data type returned

number

Description

Returns the standard deviation of the sample represented by a series of non-blank values

in:

• a repeating field (repeatingField).

• a field in matching related records specified by (table::field), whether or not

these records appear in a portal.

• several non-repeating fields in a record (field1;field2;field3).

• corresponding repetitions of repeating fields in a record

(repeatingField1;repeatingField2;repeatingField3), if the result is

returned 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...).

Examples

A portal displays the related values 5, 6, 7, and 8 in a field called Scores.

StDev(table::Scores) returns 1.29099444....

In the following examples:

• Field1 contains two repetitions with values of 1 and 2.

• Field2 contains four repetitions with values of 5, 6, 7, and 8.

• Field3 contains four repetitions with values of 6, 0, 4, and 4.

• Field4 contains one repetition with a value of 3.

StDev(Field4) results in an error because standard deviation of a single number is not

defined.

StDev(Field1;Field2;Field3) returns 2.64575131..., 3.05505046...,

2.12132034..., 2.82842712... for a repeating field.

Note When a referenced field is a repeating field, the StDev function returns the standard

deviation in the first repetition fields, then the standard deviation in the second repetition

fields, and so on.

StDev

… x

+++

n1–

------------------------------------------

… x

+++()

nn 1–()

-------------------------------------------------–=

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 237 238

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