Question:

The correlation coefficient between X and Y will have positive sign when

A.

x is increasing, y is decreasing

B.

both x and y are increasing

C.

x is decreasing, y is increasing

D.

there is no change in x and y

Answer» b. both x and y are increasing

Question:

The correlation coefficient between X and Y is 0.6. Their covariance is 4.8 and thevariance of X is 4. Then the variance of Y is:

A.

2

B.

9

C.

4

D.

16

Answer» d. 16

Question:

Coefficient of correlation measure

A.

direction of the relation

B.

degree of the relation

C.

both (a) and (b)

D.

none of the above

Answer» c. both (a) and (b)

Question:

The fertility of women in India is maximum in the age group:

A.

15-20

B.

20-24

C.

25-29

D.

15-29

Answer» c. 25-29

Question:

The death rate obtained for a segment of a population is known as :

A.

specific death rate

B.

crude death rate

C.

standardized rate

D.

vital index

Answer» a. specific death rate

Question:

Fisher’s ideal index Number satisfies

A.

time reversal & factor reversal list

B.

only time reversal list

C.

only factor reversal list

D.

circular list

Answer» a. time reversal & factor reversal list

Question:

Range of the coefficient of correlation is

A.

±2

B.

±1

C.

±0.5

D.

±0.25

Answer» b. ±1

Question:

Paasche’s index measures change in

A.

fixed market basket

B.

current consumption

C.

both fixed and current market

D.

none

Answer» b. current consumption

Question:

When there is perfect correlation, the value of the correlation coefficient is:

A.

-1

B.

+1

C.

±1

Answer» c. ±1

Question:

The word statistics was used in…………..

A.

1749

B.

1849

C.

1790

D.

1801

Answer» a. 1749