1. An authentic autographed Johnny Football has the following whole-number demand history by quarters over 3 years. For your convenience, assume that the sum of demands = 536; average demand = 44.67; and the table values in parentheses represent each demand value divided by the average demand. 2011 Demand 2012 Demand 2013 Demand 1 12 (0.268) 1 16 (0.36) 1 14 (0.31) 2 25 (0.56) 2 32 (0.72) 2 45 (1.01) 3 76 (1.7) 3 71 (1.59) 3 84 (1.88) 4 52 (1.16) 4 62 (1.39) 4 47 (1.05).
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3. [a] determine the seasonality factors for this stationary series.
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5. [b] using the seasonality factors determined in [a] find the deseasonalized data series for the last 6 quarters only (that is, 2012 Q3 - 2013 Q4) 
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7. [c] use a 6-period moving average and the appropriate seasonality factor to predict the demand in the first quarter of 2014.

Answer rating: 100% (QA)

Answer a To determine the seasonality factors for this stationary series we can calculate the averag... View the full answer