A Plastics Manufacturing Performed a Quarterly Time Series Analysis for Demands

Multiple Choice

A plastics manufacturing performed a quarterly time series analysis for demands over the last five years (periods 1 through 20) . The analysis resulted in the following trend equation and seasonal indexes: = 920.0 + 22.6 t
If demand for period 19 was actually 1,000, what was the deseasonalized demand?

A) 1045.95
B) 1394.60
C) 750.00
D) 1333.33
E) 1859.47