How Do You Find The Least Squares Regression Line?
How Do You Find The Least Squares Regression Line? Step 1: For each (x,y) point calculate x2 and xy. Step 2: Sum all x, y, x2 and xy, which gives us Σx, Σy, Σx2 and Σxy (Σ means “sum up”) Step 3: Calculate Slope m: m = N Σ(xy) − Σx Σy N Σ(x2) −