Analisis De Tendencia 1 1

Período
t (x)
Clientes (y)
XY
X2
ene-97
1
41
41
1
feb-97
2
43
86
4
mar-97
3
39
117
9
abr-97
4
37
148
16
may-97
5
42
210
25
jun-97
6
35
210
36
jul-97
7
30
210
49
ago-97
8
31
248
64
sep-97
9
32
28881
oct-97
10
30
300
100
nov-97
11
28
308
121
dic-97
12
28
336
144
ene-98
13
29
377
169
feb-98
14
26
364
196
mar-98
15



abr-98
16



may-98
17



jun-98
18



jul-98
19



ago-98
20



sep-98
21oct-98
22



nov-98
23



dic-98
24



ene-99
25



feb-99
26



mar-99
27



abr-99
28



may-99
29



jun-99
30



jul-99
31



ago-99
32



sep-99
33



oct-99
34




105
471
3243
1015

Scx=1015-(105)2= 1015-11025= 1015-787.5= 227.5
14 14

Scxy= 3243-(105) (471)= 3243-49455= 3243-35325= -289.5
14 14


b1= -289.5= -1.27 b0= 33.64-(-1.27) ((7.5)
227.533.64-(-9.53)
43.17



Yt= 43.17+-1.27 (15)
43.17+-19.05
24.12

Yt= 43.17+-1.27 (16)
43.17+-20.32
22.85

Yt= 43.17+-1.27 (17)43.17+-21.59
21.58

Yt= 43.17+-1.27 (18)
43.17+-22.86
20.31

Yt= 43.17+-1.27 (19)
43.17+-24.13
19.04

Yt= 43.17+-1.27 (20)
43.17+-25.40
17.77

Yt= 43.17+-1.27 (21)
43.17+-26.67
16.5

Yt=43.17+-1.27 (22)
43.17+-27.94
15.23

Yt= 43.17+-1.27 (23)
43.17+-29.21
13.96

Yt= 43.17+-1.27 (24)
43.17+-30.48
12.69

Yt= 43.17+-1.27 (25)
43.17+-31.75
11.42

Yt= 43.17+-1.27 (26)43.17+-33.02
10.15

Yt= 43.17+-1.27 (27)
43.17+-34.29
8.88

Yt= 43.17+-1.27 (28)
43.17+-35.56
7.61

Yt= 43.17+-1.27 (29)
43.17+-36.83
6.34

Yt= 43.17+-1.27 (30)
43.17+-38.10
5.07


Yt= 43.17+-1.27(31)
43.17+-39.37
3.80

Yt= 43.17+-1.27 (32)
43.17+-40.64
2.53

Yt= 43.17+-1.27 (33)
43.17+-41.91
1.26

Yt= 43.17+-1.27 (34)
43.17+-43.18
-0.01




Análisis;
Se pronostica que la compañíaLarry´s Lawn Service, perderá sus clientes totalmente en el período 34, mes de octubre, del año 1999, llegando a un descenso de -0.01.

Razones del descenso del herbicida:

1.- Ayuda a exterminar...