If ΣX = ΣY = 12, ΣX2 = ΣY2 = 45, ΣXY = 41 and n = 5, then what is the value of byx (regression coefficient)?

Explanation

Regression coefficient b_yx = (nΣxy – ΣxΣy) ÷ (nΣx² – (Σx)²) = (5 × 41 – 12 × 12) ÷ (5 × 45 – 144) = 61/81.