Develop a seasonally adjusted forecast model for this data. Forecast de… 1 answer below »

Develop a seasonally adjusted forecast model for this data. Forecast demand for each quarter for 2010 (using linear trend line forecast estimate for orders in 2010) – Develop a separate linear trend line forecast for each of the 4 seasons and forecast each season for 2005 – which of the 2 approaches appear most accurate & use MAD to verify.

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2005
2006
2007
2008
2009

1
18.600000000000001
18.100000000000001
22.4
23.2
24.5
106.8

2
23.5
24.7
28.8
27.6
31
135.6

3
20.399999999999999
19.5
21
24.4
23.7
109

4
41.9
46.3
45.5
47.1
52.8
233.59999999999997

104.4
108.6
117.7
122.29999999999998
132
585

Quarter
totals

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