Câu hỏi: If a regression equation contains an irrelevant variable, the parameter estimates will be
A. Consistent and unbiased but inefficient
B. Consistent and asymptotically efficient but biased
C. Inconsistent
D. Consistent, unbiased and efficient
Câu 1: If a series, yt, follows a random walk (with no drift), what is the optimal 1-step ahead forecast for y?
A. The current value of y
B. Zero
C. The historical unweighted average of y
D. An exponentially weighted average of previous values of y
30/08/2021 8 Lượt xem
Câu 2: If the number of non-zero eigenvalues of the pi matrix under a Johansen test is 2, this implies that
A. There are 2 linearly independent cointegrating vectors
B. There are at most 2 linearly independent cointegrating vectors
C. There are 3 variables in the system
D. There are at least 2 linearly independent cointegrating vectors
30/08/2021 7 Lượt xem
Câu 3: Consider the following picture and suggest the model from the following list that best characterises the process:
A. An AR(1)
B. An AR(2)
C. An ARMA(1,1)
D. An MA(3)
30/08/2021 7 Lượt xem
Câu 4: If a series, yt, follows a random walk (with no drift), what is the optimal 1-step ahead forecast for y?
A. The current value of y
B. Zero
C. The historical unweighted average of y
D. An exponentially weighted average of previous values of y
30/08/2021 9 Lượt xem
Câu 5: Which of the following would probably NOT be a potential “cure” for non-normal residuals?
A. Transforming two explanatory variables into a ratio
B. Removing large positive residuals
C. Using a procedure for estimation and inference which did not assume normality
D. Removing large negative residuals
30/08/2021 9 Lượt xem
Câu 6: If the residuals of a model containing lags of the dependent variable are autocorrelated, which one of the following could this lead to?
A. Biased but consistent coefficient estimates
B. Biased and inconsistent coefficient estimates
C. Unbiased but inconsistent coefficient estimates
D. Unbiased and consistent but inefficient coefficient estimates
30/08/2021 7 Lượt xem

Câu hỏi trong đề: Bộ câu hỏi trắc nghiệm môn Kinh tế lượng - Phần 3
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