Classical

December 2013 - Paper3

21:  
What is the degree of elasticity of demand in case the demand is represented by a straight line parallel
to the x-axis ?
 
A.

e>1

B.

e=0

C.

e=α

D.

e<1

 
 

Option: C

Explanation :


22:  
If a chi-square test is to be performed on a contingency table with 3 rows and 4 columns, how many degrees of freedom should be used ?
A.

6

B.

12

C.

8

D.

9

 
 

Option: B

Explanation :


23:  
Assertion (A) : If regression coefficient of X on Y is greater than one, regression coefficient of Y on X must be less
than one.
Reason (R) : The geometric mean between two regression coefficients is the co-efficient of correlation.
On the basis of the above, choose the appropriate answer:
A.

(A) and (R) are correct.

B.
(A) is correct, but (R) is not correct.
C.
(A) is not correct, but (R) is  correct
D.
Both (A) and (R) are not correct
 
 

Option: C

Explanation :


24:  
If the sum of squares of deviations within samples is 140 with 12 degrees of freedom and the sum of squares of deviations between samples is 190 with 2 degrees of freedom, the test statistic will be
A.

81.4

B.

12.28

C.

8.14

D.

1.22

 
 

Option: C

Explanation :


25:  
The regression equation of profits (X) on sales (Y) of a firm is given as :3Y - 5X + 110 = 0. If the sales of the
firm is RS 44,000, the profit will be 
A.

Rs 23,370

B.

Rs 26,422

C.

Rs 24,422

D.

Rs 21,370

 
 

Option: B

Explanation :




Suggest an improvement