Using the ratiotomovingaverage method determine the specific

Using the ratio-to-moving-average method, determine the specific seasonals for July, August, and September 2012. (Round your answers to 1 decimal place.)

Assume that the specific seasonal indexes in the following table are correct. Insert in the table the specific seasonals you computed in part (a) for July, August, and September 2012, and determine the 12 typical seasonal indexes. (Round your answers to 1 decimal place.)

Solution

xt   FITS1   St It(seasonal) month(2012)
6   7.12821   0.84173   1
7   7.13520   0.98105   2
12   7.14219   1.68016   3
9   7.14918   1.25888   4
6   7.15618   0.83844   5
1   7.16317   0.13960   6
5   7.17016   0.69733   7
5   7.17716   0.69665   8
16   7.18415   2.22713   9
4   7.19114   0.55624   10
7   7.19814   0.97247   11
8   7.20513   1.11032   12