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SCENARIO 16-14 a Contractor Developed a Multiplicative Time-Series Model to Forecast the Forecast

Question 55

Multiple Choice

SCENARIO 16-14
A contractor developed a multiplicative time-series model to forecast the number of contracts in future quarters,using quarterly data on number of contracts during the 3-year period from 2011 to 2013.The following is the resulting regression equation:
ln Yˆ = 3.37 + 0.117 X - 0.083 Q1 + 1.28 Q2 + 0.617 Q3
where
Yˆ is the estimated number of contracts in a quarter.
X is the coded quarterly value with X = 0 in the first quarter of 2011.
Q1 is a dummy variable equal to 1 in the first quarter of a year and 0 otherwise.
Q2 is a dummy variable equal to 1 in the second quarter of a year and 0 otherwise.
Q3 is a dummy variable equal to 1 in the third quarter of a year and 0 otherwise.
-Referring to Scenario 16-14 ,the best interpretation of the constant 3.37 in the regression equation is:


A) the fitted value for the first quarter of 2011,prior to seasonal adjustment,is log10 3.37.
B) the fitted value for the first quarter of 2011,after to seasonal adjustment,is log10 3.37.
C) the fitted value for the first quarter of 2011,prior to seasonal adjustment,is 103.37.
D) the fitted value for the first quarter of 2011,after to seasonal adjustment,is 103.37.

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