【单选题】A time series model of sales volume has the following trend and additive seasonal variation. Trend Y = 5,000 + 4,000 X. Where Y = quarterly sales volume in units. X = the quarter number (Where the fir...
【简答题】听下面一段材料, 回答第1-3题。 1. How does the man get the information about the apartment? A. From the TV. B. From the newspaper. C. From the radio. 2. How many rooms does the apartment have? A. Four. B. Five. C....