Concept the time series graph and give conclusions on it
Design these data as a time series using t = 1 to 72 for time. describe what conclusions can I derive from this graph regarding trends and seasonality?
|
Period
|
Sales
|
|
1
|
22.26
|
|
2
|
24.42
|
|
3
|
27.06
|
|
4
|
27.14
|
|
5
|
29.43
|
|
6
|
29.56
|
|
7
|
27.33
|
|
8
|
27.13
|
|
9
|
23.88
|
|
10
|
26.88
|
|
11
|
25.31
|
|
12
|
23.66
|
|
13
|
24.68
|
|
14
|
25.31
|
|
15
|
29.86
|
|
16
|
31.13
|
|
17
|
33.39
|
|
18
|
31.04
|
|
19
|
31.48
|
|
20
|
32.00
|
|
21
|
32.08
|
|
22
|
28.15
|
|
23
|
26.06
|
|
24
|
26.08
|
|
25
|
26.85
|
|
26
|
26.20
|
|
27
|
29.33
|
|
28
|
31.59
|
|
29
|
34.19
|
|
30
|
33.24
|
|
31
|
32.44
|
|
32
|
32.73
|
|
33
|
39.46
|
|
34
|
31.61
|
|
35
|
27.28
|
|
36
|
33.27
|
|
37
|
23.54
|
|
38
|
27.09
|
|
39
|
32.86
|
|
40
|
34.25
|
|
41
|
34.04
|
|
42
|
36.39
|
|
43
|
35.65
|
|
44
|
36.14
|
|
45
|
33.37
|
|
46
|
31.58
|
|
47
|
28.69
|
|
48
|
29.83
|
|
49
|
25.01
|
|
50
|
26.02
|
|
51
|
32.41
|
|
52
|
36.55
|
|
53
|
37.34
|
|
54
|
32.55
|
|
55
|
38.88
|
|
56
|
32.62
|
|
57
|
34.97
|
|
58
|
30.02
|
|
59
|
26.78
|
|
60
|
30.79
|
|
61
|
27.30
|
|
62
|
29.90
|
|
63
|
35.55
|
|
64
|
44.84
|
|
65
|
31.38
|
|
66
|
36.80
|
|
67
|
38.88
|
|
68
|
34.89
|
|
69
|
41.42
|
|
70
|
34.54
|
|
71
|
30.26
|
|
72
|
33.29
|