Filemaker Pro 8.5 Educational Maintenance T3 TJ083LL/A User Manual

Chapter 2

  

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  Aggregate functions     25

StDevP(field{;field... })

field - any 

, 

; or an 

that returns a field, repeating field, or set of non-repeating fields.
Parameters in curly braces { } are optional.

number

Returns the standard deviation of a population represented by a series of non-blank 
values in:
•

a repeating field (repeatingField).

•

a field in matching 

 specified by (table::field), whether or not 

these records appear in a 

.

•

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::field1;table::field2;...). You can include fields from different 

 (table 1::field A;table 2::field B...).

A portal displays the related values 5, 6, 7, and 8 in the field Scores. 
StDevP(table::Scores) returns 

.

 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.

StDevP(Field4) results in an error because the population standard deviation of a 

single number is not defined.

StDevP

x

1

2

x

2

2

… x

n

2

+

+

+

n

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

x

1

x

2

… x

n

+

+

+

n

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

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