2

C 31198

7. In case of time related data, which of the following is preferred 3

(a) AM.
(c) HM.

8. Median and decile are same.

(a) 27".
(c) 274,
9. Square root of variance is known as :
(a) Quartile deviation.
(c) Standard deviation.
10. Gini Coefficient is associated with :
(a) Lorenz curve.

(c) Frequency curve.

(0)
(6)

(0)
(6)

(0)
(6)

(0)
(6)

GM.
Median.

5th.

None of these.

Mean deviation.

Range.

Ogives.
None of these.

11. If X and Y are perfectly obeys the equation 2x — 5y + 2 = 0, the correlation between X and Y

1s

(a) - 1.
(6) 0.
12. The regression co-efficient of x on y is

Cov (X, Y)

Cov (5, ४)
५. ஆரு.”

(b)
(d)

(b)

(d)

+ 1.

None of these.

Cov (X, ¥)
v(x) '

None of these.

(12% 38 - 6 marks)

Section B (Short Answer Type)

Answer any ten questions.
Each one carries 2 marks.

1
1
13. Find the value of [16]4 + 8 :