cum-mean ( seq -- seq' )

Vocabulary

math.statistics

Inputs

seq	a sequence

Outputs

seq'	a sequence

Word description

Returns the cumulative mean of seq.

Examples

USING: math.statistics prettyprint ; { 1.0 2.0 3.0 } cum-mean .
{ 1.0 1.5 2.0 }

Definition

USING: kernel math sequences ;

IN: math.statistics

: cum-mean ( seq -- seq' )
    0 swap [ [ + dup ] dip 1 + / ] map-index nip ;