Return average of a sequence of numbers.

Related Syntax Constructs

The following construct(s) refer to this construct:

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Syntax

fn:avg(sequence $sequence) => double

Description

This aggregate function returns the average of the numeric values of the nodes of $sequence. The nodes of the sequence must all evaluate to numbers. If a node evaluates to the empty sequence it is discarded.

Argument

$sequence	sequence of nodes

Example

let $a := (17, 23, 11)
return avg($a)