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AÑOS x Y(VENTAS) x² xy yest y-yest (y-yest)² (x-x) (x-x)²

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2,009 -2 50,000 4 -100,000 51500 -1500 2,250,000 -2 4

2,010 -1 100,000 1 -100,000 90000 10000 100,000,000 -1 1

2,011 0 120,000 0 0 128500 -8500 72,250,000 0 0

2,012 1 160,000 1 160,000 167000 -7000 49,000,000 1 1

2,013 2 212,500 4 425,000 205500 7000 49,000,000 2 4

0 642,500 10 385,000 272,500,000 10

2,014 3

n: 5 x media: 0

Vtas.proy/14.. v.b. + t ( x ) = 244000

Ventas v.b. = åx²åy - åxåxy 6,425,000 128500

$50,000.00 nåx² - (åx)² 50

$100,000.00

$120,000.00 t. = nåxy - åxåy 1,925,000 38500

$160,000.00 nåx² - (åx)² 50

$212,500.00

$244,000.00

Err.Stdr = å(y-yest)² = 272500000 8253.79

2,009 n - 1 4

2,010

2,011

2,012 dos:disp = 1+1 + åx² = 2.2 1.48

2,013 n å(x - x)²

2,014 x = x media

VTAS.PROY= vtas.proy/2003 ± E.S(:dsp) . . . . . . . . . . . . . = :dsp= dos puntos de dispersión.

244000 ±(9.35)(1.48)

244000± 12242.34

VTAS. PROY. 2015 = 256,242.34 I

231,757.66 II

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