Question87:-Suppose collinearity is present in a regression model then which of the
statements is/are correct ?

(i) Least Square estimate of Regression coefficients have large variances

(ii) Eigenvalues of matrix X’ X is large

(iii) Estimated coefficients have large variance inflation factor

A:-Only (i and iii)

B:-None of the above
C:-Only (i)

D:-Only (ii)

Correct Answer:- Option-A

Question88:-Suppose consider a logistic regression model with one regressor, the
estimated increase in the odds ratio associated with a change of one unit in the
predictor variable is

^: -6}
B:- ९

01088)

D:- ಗ
Correct Answer:- Option-B

Question89:-Which of the following link function is suitable for Poisson Regression
model ?

A:-ldentity link function
B:-Log link function
C:-Reciprocal link function
D:-Logistic function
Correct Answer:- Option-B

Question90:-Consider a multiple linear regression model Y = XB + « , Where V(e ) =
«2 V Then which of the following is correct 7

A:-Ordinary least square estimator is biased
B:-Ordinary least square estimator is minimum variance unbiased

C:-lf V is a diagonal matrix but with unequal diagonal elements, then the
observations y are correlated

D:-Generalised least square estimate is minimum variance unbiased
Correct Answer:- Option-D

Question91:-Let f be a Reimann integrable function on a closed interval [a, b]. Then
which of the following statements is true ?

A:-f is continuous on [a, b]
B:-f is monotonic on [a, b]

C:-;2 is Reimann integrable over [a, b]