Câu hỏi: If a Johansen “max” test for a null hypothesis of 1 cointegrating vectors is applied to a system containing 4 variables is conducted, which eigenvalues would be used in the test?
A. The largest 1
B. The Second largest
C. The Second smallest
D. The smallest
Câu 1: What is the optimal three-step ahead forecast from the AR(2) model given in question 14?
A. -0.1
B. 0.27
C. -0.34
D. -0.31
30/08/2021 8 Lượt xem
Câu 2: 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
30/08/2021 7 Lượt xem
Câu 3: Which of the following sets of characteristics would usually best describe an autoregressive process of order 3 (i.e. an AR(3))?
A. A slowly decaying acf, and a pacf with 3 significant spikes
B. A slowly decaying pacf and an acf with 3 significant spikes
C. A slowly decaying acf and pacf
D. An acf and a pacf with 3 significant spikes
30/08/2021 10 Lượt xem
Câu 4: A normal distribution has coefficients of skewness and excess kurtosis which are respectively:
A. 0 and 0
B. 0 and 3
C. 3 and 0
D. Will vary from one normal distribution to another
30/08/2021 10 Lượt xem
Câu 5: 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 6: If a residual series is negatively autocorrelated, which one of the following is the most likely value of the Durbin Watson statistic?
A. Close to zero
B. Close to two
C. Close to four
D. Close to one
30/08/2021 9 Lượt xem

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