l Determining the least squares Regression line Least squares regression lines b. b Slope ∑xy;)-n衩 (∑x2)-n y-intercept bo =y? 6, x o 2002 The Wadsworth GroupDetermining the Least Squares Regression Line • Least Squares Regression Line: – Slope – y-intercept y ˆ = b 0 + b 1 x 1 b 1 = ( x i y i  ) – n×x ×y ( x i 2) – n×x 2  b 0 = y ? b 1 x © 2002 The Wadsworth Group