A company's annual profits have a trend line given by Y = 20t - 10, where Y is the trend in $'000 and t is the year with t = 0 in 20X0.What are the forecast profits for the year 20X9 using an additive model if the cyclical component for that year is -30?
A、$160,000
B、$140,000
C、$119,000
D、$60,000
A、$160,000
B、$140,000
C、$119,000
D、$60,000
【参考答案及解析】
In 20X9, t = 9 y = 20t - 10 y = (20 x 9) - 10 y = 180 - 10 = 170 a Forecast profits for 20X9 = 170 - 30 = 140 =$140,000
In 20X9, t = 9 y = 20t - 10 y = (20 x 9) - 10 y = 180 - 10 = 170 a Forecast profits for 20X9 = 170 - 30 = 140 =$140,000