BOLSOS
AÑO Y X X2 Y*X Y" Y-Y"
1 840 -2 4 -1680 859 -19
2 910 -1 1 -910 893 17
3 940 0 0 0 927 13
4 965 1 1 965 893 72
5 980 2 4 1960 995 -15
TOTAL 4635 0 10 335 60 68
Ecuaciones
a= ΣYX b= ΣYX
Y= a+bX N ΣX2
a= 4635 =
927
5
b= 335 =
34
10
Ejercicios
Y1= 927 + 34 * -2
859
= 927 - 68 =
Y2= 927 + 34 * -1
893
= 927 - 34 =
Y3= 927 + 34 * 0
927
= 927 + 0 =
Y4= 927 + 34 * 1
893
= 927 + 34 =
Y5= 927 + 34 * 2
995
= 927 + 68 =
995*6% = 59.7
= 60