【单选题】What is the purpose of seasonally adjusting the values in a time series?
A.
To obtain an instant estimate of the degree of seasonal variation
B.
To obtain an instant estimate of the trend
C.
To ensure that seasonal components total zero
D.
To take the first step in a time series analysis of the data
【判断题】TIME SERIES models rely on judgment in an attempt to incorporate qualitative or subjective factors into the forecasting model.
【判断题】Synchronic linguistics deals with a series of language phenomena at the same time.()
【判断题】Strict exogeneity usually does not hold for dynamic time series models.
【单选题】毛泽东思想形成的时代条件是______。
A.
A. A.俄国十月革命开辟了世界无产阶级社会主义革命的新时代
B.
五四新文化运动以后中国革命进入新民主主义革命时期
C.
中国共产党成立后开展的反帝反封建的民族民主革命运动
D.
鸦片战争后,中国逐步演变为一个半殖民地半封建的社会
【判断题】TIME SERIES models attempt to predict the future by using historical data.
【单选题】植株上出现第一朵或第一批完全开放的花称为( )
【单选题】毛泽东思想形成和发展的时代条件是( )。
A.
俄国“ 十月革命 ”开辟了世界无产阶级社会主义革命的新时代
B.
1842 年鸦片战争以后,中国逐步沦为半殖民地半封建的社会
C.
1919 年“五四运动”以后,中国革命进入新民主主义革命时期
D.
1927 年“八一”南昌起义以后,中国共产党独立担负起领导中国革命的重任
【单选题】A time series is
A.
the length of a business cycle.
B.
a macroeconomic aggregate that does not lead or lag the business cycle.
C.
data that is subject to revision.
D.
a sequence of dated measurements.