27.

28.
29.
30.

31.

32.

33.

35.

36.

4 D 12459
Find the equilibrium price and quantity, if the demand and supply equations are respectively,
2p = 14-x and 12p= 14 +x.
Define kurtosis. What are the various measures of kurtosis ?
What are regression coefficients ? What are their properties ?
Explain the method of Lorenz curve and Gini Coefficient.

ಲ
< ~

, show that A is singular.

حار
‎ರಾ‏
‏تع نر ‎४‏

If i 8
|

Write a note on graphical methods for correlation and regression.
(6 x 5 = 30 marks)

Section D (Essay Type)

Answer any two questions.
Each one carries 12 marks.

Using matrix inverse method solve the equations to get the values of x, y and z.
‏عل + /ن - + : 1 - ع + بن + جه‎ - 0 : + + 2 - 22 = 3.

Define skewness, How is it measured? Find the quartile coefficient of skewness to the following
data :-

Class ध 1-5 6-10 11-15 16-20 21-25 26-30 31-35
Frequency : 3 4 68 30 10 6 2

12 3
Matrix A is given by A=|5 7 4 |, छ0ए ऐश 8 87 ७ 1.
ma 1:3

Define rank correlation coefficient. The following are the ranks obtained by 10 students in Economics
and Mathematics :

Economics ‏کو ا‎ 2 3 ரதி இல்ல்‌ ಧಡಿ ட்டு
Mathematics : 1 4 2 5 3 9 ‏1و‎ 0 8
To what extent is the knowledge of students in the two subjects related ?
(2 x 12 = 24 marks)