I – Mínimos Cuadrados.
Cuando "n" es par.
Desifentante de un 1 Galón
|
Años |
Y |
X |
XY |
X2 |
|
98 |
31.4 |
0 |
0 |
0 |
|
99 |
26.6 |
1 |
26.6 |
1 |
|
00 |
25.3 |
2 |
50.6 |
4 |
|
01 |
30.5 |
3 |
91.5 |
9 |
|
02 |
28.0 |
4 |
112.0 |
16 |
|
03 |
34.2 |
5 |
171.0 |
25 |
|
N = 6 |
∑ Y = 176 |
∑ X = 15 |
∑ XY = 451.7 |
∑ X2 = 55 |
Y= A0 + A ix
A0 = (∑Y) (∑X2) – (∑X) (∑Y)
N (∑X2) – (∑X)2
A0 = (176) (55) – (15) (451.7)
6 (55) – (15)2
A0 = 9680 – 6775.5 =
330 – 225
A1 = N (∑ XY) – (∑X) (∑Y)
N (∑ Y2) – (∑ Y)2
A1 = 6 (451.7) – (15) (176) =
6 (55) – (15)2
A1 = 3710.2 – 2640 = 70.2
330 – 225 105
A1 = 0.66
Y = 27.6 + 0.66 (6)
Y = 27.6 + 3.96
Y04 = 31.56
|
Años |
Y |
X |
XY |
X2 |
|
1998 |
28.2 |
0 |
0 |
0 |
|
99 |
22.5 |
1 |
22.5 |
1 |
|
00 |
21.2 |
2 |
42.4 |
4 |
|
01 |
27.4 |
3 |
82.2 |
9 |
|
02 |
25.1 |
4 |
100.4 |
16 |
|
03 |
33.0 |
5 |
165.0 |
25 |
|
N = 6 |
∑ Y = 157.4 |
∑ X = 15 |
∑ XY = 412.5 |
∑ X2 = 55 |
A0 = (∑Y) (∑x2) – (∑X) (∑XY) =
N (∑X2) – (∑X)2
A0 = (157.4) (55) – (15) (412.5)
6 (55) – (15)2
A0 = 8657 – 6187.5 =
330 – 225
A0 = 2469.5 = 23.5
105
A1 = N (∑ XY) – (∑X) (∑Y) =
N (∑X2) – (∑X)2
A1 = 6 (412.5) – (15) (15734) =
N (∑X2) – (∑X)2
A1 = 2475 – 2361 = 114 = 1.08
330 – 225 105
Y = 23.5 + 1.08 (6)
Y = 23.5 + 6.48
Y 04 = 29.98
|
Años |
Y |
X |
XY |
X2 |
|
1998 |
33.2 |
0 |
0 |
0 |
|
99 |
29.5 |
1 |
29.5 |
1 |
|
00 |
27.4 |
2 |
54.8 |
4 |
|
01 |
32.6 |
3 |
97.8 |
9 |
|
02 |
30.4 |
4 |
121.6 |
16 |
|
03 |
36.1 |
5 |
180.6 |
25 |
|
N = 6 |
∑ Y = 189.2 |
∑ X = 15 |
∑ XY = 484.3 |
∑ X2 = 55 |
Y = A0 + A ix
A0 = (∑ Y) (∑X2) – (∑X) (∑XY)
N (∑ X2) – (∑ X)2
A0 = 10406 – 7264.5
330 – 225
A0 = 3141.5
105
A0 = 29.9
A1 = N (∑ XY) – (∑ X) (∑ Y)
N (∑ X2) – (∑ X)2
A1 = 6 (484.3) – (15) (189.2)
6 (55) – (15)2
A1 = 2905.8 – 283.8
330 – 225
A1 = 262.2
105
A1 = 2.49
Y = A0 + A1X
Y = 29.9 + 2.49 (6)
Y = 29.9 + 14.94
YX04 = 44.84
|
Años |
Y |
X |
XY |
X2 |
|
1998 |
20.1 |
0 |
0 |
0 |
|
99 |
19.4 |
1 |
19.4 |
1 |
|
00 |
18.1 |
2 |
36.2 |
4 |
|
01 |
22.3 |
3 |
66.9 |
9 |
|
02 |
21.0 |
4 |
84.0 |
16 |
|
03 |
31.0 |
5 |
155 |
25 |
|
N = 6 |
∑ Y = 131.9 |
∑ X = 15 |
∑ XY = 361.5 |
∑ X2 = 55 |
A0 = (∑ Y) (∑X2) – (∑X) (∑XY)
N (∑ X2) – (∑ X)2
A0 = (131.9) (55) – (15) (361.5)
6 (55) – (15)2
A0 = 7254.5 – 5422.5
330 - 225
A0 = 1832
105
A0 = 17.4
A1 = N (∑ XY) – (∑ X) (∑ Y)
N (∑ X2) – (∑ X)2
A1 = 6 (361.5) – (15) (131.9)
6 (55) – (15)2
A1 = 2169 – 1978.5
330 – 225
A1 = 190.5
105
A1 = 1.81
Y = A0 + A1 4
Y = 17.4 + 1.81 (6)
Y = 17.4 + 10.86
YX04 = 28.26
Ventas Para 04 1 Galón.
|
Meses |
98 |
99 |
00 |
01 |
02 |
03 |
% |
2004 |
|
Enero |
2.5 |
2.2 |
2.1 |
2.6 |
2.4 |
3.0 |
8.4 |
2.65 |
|
Febrero |
1.8 |
2.3 |
1.7 |
2.4 |
2.2 |
2.8 |
7.5 |
2.36 |
|
Marzo |
2.7 |
2.4 |
1.6 |
2.4 |
2.2 |
2.6 |
7.8 |
2.46 |
|
Abril |
2.6 |
1.8 |
1.9 |
2.3 |
2.0 |
2.7 |
7.5 |
2.36 |
|
Mayo |
2.6 |
1.9 |
1.8 |
1.9 |
2.6 |
3.1 |
7.8 |
2.46 |
|
Junio |
1.9 |
1.7 |
1.8 |
2.1 |
2.0 |
2.5 |
6.8 |
2.14 |
|
Julio |
1.7 |
1.6 |
1.8 |
2.0 |
1.9 |
2.6 |
6.5 |
2.05 |
|
Agosto |
1.9 |
2.0 |
2.0 |
2.2 |
2.0 |
2.8 |
7.3 |
2.32 |
|
Septiembre |
2.4 |
2.1 |
2.2 |
2.6 |
2.5 |
2.8 |
8.2 |
2.59 |
|
Octubre |
3.8 |
3.0 |
2.2 |
3.0 |
2.7 |
3.0 |
10.5 |
3.31 |
|
Noviembre |
3.7 |
2.8 |
3.0 |
3.6 |
2.7 |
3.1 |
10.7 |
3.38 |
|
Diciembre |
3.8 |
2.8 |
3.1 |
3.7 |
2.8 |
3.2 |
11.0 |
3.48 |
|
Totales |
31.4 |
26.6 |
25.3 |
30.5 |
28.0 |
34.3 |
100.0 |
31.56 |
98/03 = 14.8 Enero
Totales 98/03 = 176.0
14.8 = % = 8.4
176.0
31.56 X 0.084 = 2.65
Ventas para el 2004
RD $ 29.98
Enero - Diciembre
|
Meses |
98 |
99 |
00 |
01 |
02 |
03 |
% |
2004 |
|
Enero |
2.6 |
2.3 |
2.0 |
2.2 |
2.3 |
3.9 |
9.7 |
2.91 |
|
Febrero |
2.4 |
2.2 |
2.1 |
2.0 |
1.8 |
2.0 |
8.0 |
2.40 |
|
Marzo |
2.0 |
1.9 |
1.7 |
1.4 |
2.0 |
2.2 |
7.1 |
2.15 |
|
Abril |
2.1 |
2.0 |
2.1 |
2.0 |
1.6 |
2.9 |
8.0 |
2.40 |
|
Mayo |
1.9 |
1.3 |
1.4 |
2.6 |
2.3 |
2.7 |
7.7 |
2.32 |
|
Junio |
2.0 |
1.9 |
1.7 |
2.4 |
2.2 |
2.1 |
7.8 |
2.33 |
|
Julio |
2.1 |
1.2 |
1.0 |
2.1 |
1.7 |
2.6 |
6.7 |
2.05 |
|
Agosto |
1.5 |
2.3 |
2.0 |
2.2 |
1.8 |
2.0 |
8.3 |
2.45 |
|
Septiembre |
2.0 |
1.8 |
1.5 |
2.6 |
2.1 |
3.4 |
8.6 |
2.54 |
|
Octubre |
2.5 |
1.3 |
1.0 |
2.3 |
2.1 |
3.3 |
8.0 |
2.37 |
|
Noviembre |
3.1 |
1.5 |
2.3 |
2.1 |
2.0 |
2.4 |
8.5 |
2.56 |
|
Diciembre |
3.0 |
2.8 |
2.4 |
3.5 |
3.2 |
3.5 |
11.6 |
3.50 |
|
Totales |
28.2 |
22.5 |
21.2 |
27.4 |
25.1 |
33.0 |
100.0 |
29.98 |
98/03 = 15.3 Enero
Totales 98/03 = 157.4
15.3 = % = 9.72
157.4
29.98 X 0.0972 = 2.91
Ventas para el 2004
RD $ 44.84
Enero - Diciembre
|
Meses |
98 |
99 |
00 |
01 |
02 |
03 |
% |
2004 |
|
Enero |
3.6 |
3.4 |
2.9 |
3.0 |
2.8 |
3.0 |
9.8 |
4.42 |
|
Febrero |
3.2 |
2.1 |
2.0 |
3.2 |
3.1 |
2.9 |
8.7 |
3.90 |
|
Marzo |
2.3 |
2.1 |
1.6 |
2.0 |
2.1 |
2.7 |
6.7 |
3.09 |
|
Abril |
2.4 |
2.3 |
2.0 |
2.2 |
1.8 |
2.9 |
7.1 |
3.20 |
|
Mayo |
3.1 |
2.0 |
2.9 |
2.6 |
2.3 |
2.2 |
8.0 |
3.54 |
|
Junio |
2.0 |
1.8 |
1.7 |
2.8 |
2.6 |
2.9 |
7.2 |
3.24 |
|
Julio |
2.1 |
1.9 |
1.5 |
2.5 |
2.2 |
2.7 |
6.9 |
3.04 |
|
Agosto |
3.2 |
3.0 |
2.8 |
3.0 |
2.7 |
3.7 |
9.8 |
4.36 |
|
Septiembre |
2.4 |
2.3 |
2.0 |
2.2 |
2.5 |
3.6 |
7.9 |
3.58 |
|
Octubre |
3.0 |
2.9 |
2.7 |
3.5 |
2.8 |
2.9 |
9.5 |
4.27 |
|
Noviembre |
2.8 |
2.7 |
2.5 |
2.6 |
2.4 |
3.0 |
8.5 |
3.80 |
|
Diciembre |
3.1 |
3.0 |
2.9 |
3.0 |
3.1 |
3.6 |
9.9 |
1.40 |
|
Totales |
33.2 |
29.5 |
27.5 |
32.6 |
30.4 |
36.1 |
100 |
44.84 |
98/03 = 18.7 Enero
Totales 98/03 = 189.3
18.7 = % = 9.87
189.3
44.84 X 0.0987 = 4.42
Ventas para el 2004
RD $ 28.26
Enero - Diciembre
|
Meses |
98 |
99 |
00 |
01 |
02 |
03 |
% |
2004 |
|
Enero |
2.0 |
1.9 |
1.8 |
2.0 |
2.1 |
2.5 |
9.3 |
2.63 |
|
Febrero |
1.5 |
1.3 |
1.2 |
1.3 |
1.2 |
2.6 |
9.1 |
2.52 |
|
Marzo |
2.1 |
2.0 |
1.9 |
1.8 |
1.7 |
2.9 |
9.2 |
2.64 |
|
Abril |
1.3 |
1.1 |
1.0 |
1.1 |
1.0 |
2.5 |
6.0 |
1.62 |
|
Mayo |
2.1 |
1.8 |
1.5 |
2.7 |
2.4 |
2.3 |
9.3 |
2.70 |
|
Junio |
1.5 |
1.2 |
1.1 |
1.4 |
1.3 |
2.4 |
6.5 |
1.90 |
|
Julio |
1.2 |
1.1 |
1.0 |
1.2 |
1.1 |
2.5 |
6.1 |
1.71 |
|
Agosto |
1.7 |
2.3 |
2.0 |
2.2 |
2.0 |
2.4 |
9.3 |
2.63 |
|
Septiembre |
2.0 |
1.8 |
1.6 |
1.9 |
1.8 |
2.9 |
9.0 |
2.54 |
|
Octubre |
1.7 |
1.4 |
2.0 |
2.1 |
1.9 |
2.0 |
8.2 |
2.33 |
|
Noviembre |
1.0 |
1.6 |
1.4 |
2.6 |
2.4 |
2.6 |
8.5 |
2.44 |
|
Diciembre |
2.0 |
1.9 |
1.6 |
2.0 |
2.1 |
3.4 |
9.5 |
2.60 |
|
Totales |
20.1 |
19.4 |
18.1 |
22.3 |
21.0 |
31.0 |
109.50.0 |
28.26 |
98/03 = 12.3 Enero
Totales 98/03 = 131.9
12.3 = % = 9.32
131.9
28.26 X 0.0932 = 2.63
Cuota De Ventas
Año 2004
Territorio
|
Zonas |
% |
Vendedor |
Enero |
Febrero |
Marzo |
Abril |
Mayo |
|
Santo Domingo |
35 |
101=11% 102=9% 103=4% 104=6% 105=5% |
44,135 |
39,550 |
36,190 |
33,530 |
38,570 |
|
Cibao |
30 |
201=9% 202=8% 203=4% 204=6% 205=3% |
37,830 |
33,900 |
31,020 |
28,740 |
33,060 |
|
Este |
20 |
301=4% 302=8% 303=4% 304=3% |
25,220 |
22,600 |
20,680 |
19,160 |
22,040 |
|
Sur |
15 |
401=7% 402=4% 403=4% |
18,915 |
16,950 |
15,510 |
14,370 |
16,530 |
|
Totales |
100 |
106.380.00 |
126.100 |
113.000 |
103.400 |
95,8000 |
100.2000 |
|
Junio |
Julio |
Agosto |
Septiembre |
Octubre |
Noviembre |
Diciembre |
|
33,635 |
30,975 |
41,160 |
39,375 |
42,980 |
42,630 |
48,930 |
|
28,830 |
26,550 |
35,280 |
33,750 |
36,840 |
36,540 |
41,940 |
|
19,220 |
17,700 |
23,520 |
22,500 |
24,560 |
24,360 |
27,960 |
|
14,415 |
13,275 |
17,640 |
16,875 |
18,420 |
18,270 |
20,970 |
|
96,100 |
88,500 |
117,600 |
112,500 |
122,800 |
121,800 |
139,800 |
Variación Anual
I Galón
|
Años |
Ventas |
Incremento |
Variación Anual |
|
98 99 00 01 02 03 |
31.4 26.6 25.3 30.5 28.0 34.2 |
(4.8) (1.3) 5.2 (2.5) 6.2 |
0.0 (4) (0.4) (2.4) |
|
04 |
31.5 |
∑ = 15 / 5 = 3 |
(2.2) |
|
Años |
Ventas |
Incremento |
Variación Anual |
|
98 99 00 01 02 03 |
28.2 22.5 21.2 27.4 25.1 33.0 |
(5.7) 1.3 (6.2) 2.3 (7.9) |
0.2 (4.7) (0.3) (3.4) |
|
04 |
22.5 |
∑ = 16.2 / 5 = 3.24 = 1.0324 |
∑ (8.2) |
16 onz
|
Años |
Ventas |
Incremento |
Variación Anual |
|
98 99 00 01 02 03 |
33.2 29.5 27.5 32.6 30.4 36.1 |
(3.7) (2) (5.1) 2.2 (5.7) |
(0.5) (0.3) (0.4) (2.5) |
|
04 |
44.84 |
∑ = 10.3 = 1.0103 |
∑ = 2.7 |
|
Años |
Ventas |
Incremento |
Variación Anual |
|
98 99 00 01 02 03 |
20.1 19.4 18.1 22.3 21.0 31.0 |
0.7 1.3 (4.2) 1.3 (10) |
1.8 (3.2) (0.3) (7.6) |
|
04 |
28.26 |
∑ = 10.9 = 1.0109 |
∑ 9.3 |
José Berroa
Lic. En Informática
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