16/04/10

X Y X2 Y2 XY
2.1- 3.5- 4.41- 12.25- 7.35
2.4- 3.1- 5.76- 9.61- 7.344
3.5- 3.4- 12.25- 11.26- 11.9
3.7- 3.7- 13.69- 13.69- 13.69
4.5- 3.8- 20.25- 14.431- 17.1
5.0- 3.7- 25- 13.69- 18.5
5.1- 3.9- 26.01- 15.21- 19.89
5.2- 4.1- 27.04- 16.81- 21.32
5.4- 3.9- 29.16- 15.21- 21.06
5.7- 4.4- 32.49- 19.36- 25.08
∑=42.6 ∑=37.6 ∑=196.06 ∑=141.83 ∑=163.234


DATOS

N=10
∑XY=163.234
∑X2=196.06
∑X=42.6
∑Y2 =141.83

SUSTITUCION
B=10(163.234)-(42.6)(37.6)
10(196.06)-(42.6)2

B= 1633.34-1597.5
1960.8- 1814.76

B=35.28
146.04

B=0.2436

A=∑Y-B∑X
N N

A=37.6-(0.2436)*42.6
10 10

A=3.76-1.0377 A=2.7232

Y=A+BX
Y=2.7232+0.2436 (6.4)=1.5590

Y=2.7232+1.5590=4.2813