[r] ( {{x,y}...} -- mean(x) mean(y) {x} {y} sx sy )

Vocabulary
math.statistics

Definition

USING: kernel sequences ;

IN: math.statistics

: [r] ( {{x,y}...} -- mean(x) mean(y) {x} {y} sx sy )
    first2 [ [ [ mean ] bi@ ] 2keep ] 2keep
    [ population-std ] bi@ ;