Free PRMIA 8002 Exam Dumps Questions & Answers

Suppose a discrete random variable can take on the values -1, 0 and 1 each with a probability of 1/3. Then the mean and variance of the variable is

• A.  mean is 0, variance is 1/3
• B.  mean is 0, variance is 2/3
• C.  mean is 1/3, variance is 1/3
• D.  mean is 0, variance is 1/2

An indefinite integral of a polynomial function is

• A.  none of the above
• B.  always increasing
• C.  always positive
• D.  always less than the function itself

What is the sum of the first 20 terms of this sequence: 3, 5, 9, 17, 33, 65,...?

• A.  1 048 574
• B.  2 097 172
• C.  2 097 170
• D.  1 048 595

At what point x does the function f(x) = x3 - 4x2 + 1 have a local minimum?

• A.  0
• B.  -0.666666667
• C.  2.66667
• D.  2

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 structural break in the dependent variable
• C.  A high positive correlation between two explanatory variables
• D.  The omission of a relevant explanatory variable