Multiple Ejercicios Resueltos A Mano — Regresion Lineal

Σ(1) = 5 Elemento (1,2) y (2,1): ΣX₁ = 4+5+3+6+4 = 22 Elemento (1,3) y (3,1): ΣX₂ = 6+7+5+8+6 = 32 Elemento (2,2): ΣX₁² = 16+25+9+36+16 = 102 Elemento (2,3) y (3,2): Σ(X₁ X₂) = (4 6)+(5 7)+(3 5)+(6 8)+(4*6) = 24+35+15+48+24 = 146 Elemento (3,3): ΣX₂² = 36+49+25+64+36 = 210

Substitute:

Where:

Para resolver un ejercicio de dos variables independientes ( X1cap X sub 1 X2cap X sub 2 ) sin usar software, se suelen seguir estos pasos: regresion lineal multiple ejercicios resueltos a mano

| i | Y | X₁ | X₂ | |---|----|----|----| | 1 | 120| 80 | 10 | | 2 | 150| 100| 5 | | 3 | 90 | 60 | 15 | | 4 | 200| 140| 2 | | 5 | 110| 85 | 8 | Σ(1) = 5 Elemento (1,2) y (2,1): ΣX₁

Finally (b_0 = 75 - 4(5) - 6.4(0) = 75 - 20 = 55) Σ(1) = 5 Elemento (1

I see an error. The inverse should yield reasonable coefficients. Let me recompute the adjugate properly.