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【判断题】
在计量经济学模型建模过程中,如果不小心遗漏个别解释变量,对参数估计量的方差不会造成什么影响。( )A.
正确
B.
错误
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皮皮学刷刷变学霸
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【单选题】一个泰国团队来华旅游,抵达首都机场时两名客人发现行李丢失,失主 。
A.
可向境外组团社索赔
B.
B、可向有关航空公司索赔
C.
可向旅游目的地接待社索赔
D.
D、自己负责
【单选题】Pick the true statements from the following. I. Detrending removes the lag from oscillators. II. Smoothing removes the lag from oscillators. III. The MACD histogram is an example of double detrending....
A.
Only I and II are incorrect.
B.
Only I, III, and IV.
C.
All are correct.
D.
Only I and III are correct.
【单选题】When using the moving average method, you must select which represent(s) the number of terms in the moving average.
A.
a smoothing constant
B.
the explanatory variables
C.
an alpha value
D.
a span
【单选题】For example, you can handle conflict by denying that the problem exists, smoothing it over, or trying to overpower the other person. These, of course, will lead to win or lose situations. But when you...
A.
cooperating and compromising with the other party
B.
denying the conflict exists
C.
smoothing the conflict over
D.
trying to defeat the other party
【单选题】When using exponential smoothing, a smoothing constant must be used. The smoothing constant is a value that:
A.
ranges between 0 and 1
B.
ranges between –1 and +1
C.
is equal to the largest observed value in the series
D.
represents the strength of the association between the forecasted and observed values
【单选题】When is the exponential smoothing model equivalent to the naïve forecasting model?
A.
α = 0
B.
α = 0.5
C.
α = 1
D.
during the first period in which it is used
E.
never
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