The company purchases small imported trinkets in bulk, packages them, and sells them to retail stores. They are conducti

[answerhappygod]

The company purchases small imported trinkets in bulk,packages them, and sells them to retail stores. They are conductingan inventory control study of all their items. The following dataare for one such item, which is not seasonal.
(a) Determine the regression equation
(b) Calculate forecasts for the first four months of thenext year.
1
2
3
4
5
6
7
8
9
10
11
12
Month
January
February
March
April
May
June
July
August
September
October
November
December
Sales
51
55
54
57
50
68
66
59
67
69
75
77