In January, the unemployment in Ruritania is 567,800. If the seasonal factor using an additive time series model is +90,100, what is the seasonally-adjusted level of unemployment (to the nearest whole number)?
A、90,100
B、477,700
C、567,800
D、657,900
A、90,100
B、477,700
C、567,800
D、657,900
【参考答案及解析】
The additive model Y = T + S where Y = actual series T = trend S = seasonal The seasonally-adjusted value is an estimate of the trend. a Y = T + S T = Y - S T = 567,800 - ( + 90,100) T = 477,700
The additive model Y = T + S where Y = actual series T = trend S = seasonal The seasonally-adjusted value is an estimate of the trend. a Y = T + S T = Y - S T = 567,800 - ( + 90,100) T = 477,700