Câu hỏi: Consider the testing of hypotheses concerning the cointegrating vector(s) under the Johansen approach. Which of the following statements is correct?

A. If the restriction is (are) rejected, the number of cointegrating vectors will rise

B. If the restriction(s) is (are) rejected, the number of eigenvalues will fall

C. Whether the restriction is supported by the data or not, the eigenvalues are likely to change at least slightly upon imposing the restriction(s)

D. All linear combinations of the cointegrating vectors are themselves cointegrating vectors

Câu 1: What would typically be the shape of the news impact curve for a series that exactly followed a GARCH (1,1) process?

A. It would be asymmetric, with a steeper curve on the left than the right

B. It would be asymmetric, with a steeper curve on the right than the left

C. It would be symmetric about zero

D. It would be discontinuous about zero

Câu 2: Số liệu dùng cho phân tích mô hình Kinh tế lượng là:

A. Số liệu chéo

B. Số liệu thời gian

C. Số liệu hỗn hợp

D. Số liệu của các biến kinh tế xã hội

Câu 3: Trong hồi quy 3 biến, hàm hồi quy không phù hợp với trường hợp nào trong các trường hợp sau?

A. β1= β2=0

B. β2=0 hoặc β3=0

C. β2= β3=0

D. β1= β3=0

Câu 4: Which among the following is not comparative scaling technique?

A. Rank order

B. Constant sum scale

C. Q-sort

D. Stapel scale

Câu 5: The interval scale possesses all of the below properties, except:

A. Order

B. Distance

C. Origin

D. All of the above

Câu 6: Executive summary should involve all of the following, except:

A. Why and how the research was carried out

B. What was done to manage fieldworkers

C. What was found

D. What can be interpreted and acted upon by the manager