Free PRMIA 8007 Exam Dumps Questions & Answers

Which of the following statements are true about Maximum Likelihood Estimation?
(i) MLE can be applied even if the error terms are not i.i.d. normal.
(ii) MLE involves integrating a likelihood function or a log-likelihood function.
(iii) MLE yields parameter estimates that are consistent.

• A.  (i) and (iii)
• B.  (i), (ii), and (iii)
• C.  (i) only
• D.  (i) and (ii)

Evaluate the derivative of exp(x2 + 2x + 1) at the point x = -1

• A.  1
• B.  0
• C.  2
• D.  0.5

Which statement regarding the matrix below is true?

• A.  It is positive definite
• B.  It is positive semi-definite
• C.  It is negative definite
• D.  It is not positive definite

What is the maximum value of the function F(x, y)=x2+y2 in the domain defined by inequalities x 1, y -2, y-x 3 ?

• A.  17
• B.  29
• C.  1
• D.  -25

Which of the following is not a direct cause of autocorrelation or heteroskedasticity in the residuals of a regression model?

• A.  Using an inappropriate functional form in the model
• B.  A high positive correlation between two explanatory variables
• C.  The omission of a relevant explanatory variable
• D.  A structural break in the dependent variable