Câu hỏi: Which of the following is a correct interpretation of a “95% confidence interval” for a regression parameter?
A. We are 95% sure that the interval contains the true value of the parameter
B. We are 95% sure that our estimate of the coefficient is correct
C. We are 95% sure that the interval contains our estimate of the coefficient
D. In repeated samples, we would derive the same estimate for the coefficient 95% of the time
Câu 1: Which one of the following is NOT an assumption of the classical linear regression model?
A. The explanatory variables are uncorrelated with the error terms
B. The disturbance terms have zero mean
C. The dependent variable is not correlated with the disturbance terms
D. The disturbance terms are independent of one another
30/08/2021 8 Lượt xem
Câu 2: Which of the following is the most accurate definition of the term “the OLS estimator”?
A. It comprises the numerical values obtained from OLS estimation
B. It is a formula that, when applied to the data, will yield the parameter estimates
C. It is equivalent to the term “the OLS estimate”
D. It is a collection of all of the data used to estimate a linear regression model.
30/08/2021 8 Lượt xem
Câu 3: The value of the Durbin Watson test statistic in a regression with 4 regressors (including the constant term) estimated on 100 observations is 3.6. What might we suggest from this?
A. The residuals are positively autocorrelated
B. The residuals are negatively autocorrelated
C. There is no autocorrelation in the residuals
D. The test statistic has fallen in the intermediate region
30/08/2021 9 Lượt xem
Câu 4: Which of the following statements is correct concerning the conditions required for OLS to be a usable estimation technique?
A. The model must be linear in the parameters
B. The model must be linear in the variables
C. The model must be linear in the variables and the parameters
D. The model must be linear in the residuals
30/08/2021 7 Lượt xem
Câu 5: The numerical score assigned to the credit rating of a bond is best described as what type of number?
A. Continuous
B. Cardinal
C. Ordinal
D. Nominal
30/08/2021 10 Lượt xem
Câu 6: Which of the following is NOT a good reason for including lagged variables in a regression?
A. Slow response of the dependent variable to changes in the independent variables
B. Over-reactions of the dependent variables
C. The dependent variable is a centred moving average of the past 4 values of the series
D. The residuals of the model appear to be non-normal
30/08/2021 8 Lượt xem

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