REGRESIN1. Proyectar la Oferta de un cierto producto tomando en cuenta los datos obtenidos en el estudio de mercado, hallar la ecuacin de regresin.

AOTIEMPO(X)OFERTA(Y)X*YX2

19891100,000100,0001

19902120,000240,0004

19913140,000420,0009

19924110,000440,00016

19935170,000850,00025

19946150,000900,00036

19957180,0001,260,00049

19968200,0001,600,00064

19979210,0001,890,00081

199810200,0002,000,000100

TOTAL551,580,0009,700,000385

_X = X =55 = 5.5 10 10

_Y = Y =1, 580,000 = 158000 10 10

VARIANZA _S2 = X2- X2 = 385 - 30.25 = 8.15 n 10

COVARIANZA _ _ Cov XY = XY - X.Y = 9, 700,000 (5.5 *1, 580,000) n 10= 9, 700,000 869,000 = 101,000b:

b = Cov XY = 101,000 = 12,242.42 S2 X8.25

a:_ _a =Y b X = 158,000 12,242.42 * 5.5 = 158,000 67,333.31 = 90,666.69

RECTA DE REGRESIONY: a + b XY= 90,666.69 + 12,242.42X