Regresion Lineal Multiple Ejercicios Resueltos A Mano May 2026

ΣX₂ = 6+8+5+9+7 = 35 ΣX₁X₂ = (4 6)+(5 8)+(3 5)+(6 9)+(4*7) = 24+40+15+54+28 = 161 ΣX₂² = 36+64+25+81+49 = 255

det(A) = 5 * det([102, 146; 146, 210]) - 22 * det([22, 146; 32, 210]) + 32 * det([22, 102; 32, 146]) regresion lineal multiple ejercicios resueltos a mano

Sea A = X'X.

Restar (B') de (A'): (8771-7840)b₁ = 12348-10920 → 931b₁ = 1428 → b₁ = 1428/931 ≈ 1.534 ΣX₂ = 6+8+5+9+7 = 35 ΣX₁X₂ = (4

Nueva X'X:

[1 1 1 1 1 4 5 3 6 4 6 7 5 8 6] Multiplicamos: (X'X) = matriz 3x3. 210]) - 22 * det([22