Regression

SLOPE Formula 1

N ∑ XY - ∑X * ∑Y

b = ______________________________

N∑ X² - (∑X)²

SLOPE Formula 2

∑ (X - M_X) * (Y- M_Y)

b = ________________________

∑ (X - M_X)²

INTERCEPT

a = M_Y – b * M_X