- #1

- 13

- 0

Ʃw

_{i}x

_{i}y

_{i}- (Ʃx

_{i}w

_{i}Ʃy

_{i}w

_{i})/Ʃw

_{i}

Into an equation of the form: Ʃ(something - something)y

_{i}

I am pretty sure the first something is x

_{i}w

_{i}, but I have no idea what the second something would be.....

Any help would be greatly appreciated. Thanks!