## Download "Quantitative Methods" of Economics Question Paper PDF for B.A / B.Sc. (Hons.) 4th Semester Previous Years for Students.

• Friday, December 10, 2021

## B.A./B.Sc. (General) 4th SemesterEconomicsPaper: Quantitative Methods

Time Allowed: Three Hours]   [Maximum Marks: 90

Note:- (1) Attempt five questions in all.

(2) Q. No. 1 is compulsory.

(3) Attempt one question from each Unit.

(4) Use of a simple calculator is allowed.

1. Attempt any nine of the following:

(1) Define disjoint set.

(vi) If the sum and difference of two quartiles are 22 and 8 respectively, find the coefficient of skewness when M = 10.5.

(vii) Give the properties of regression coefficients.

(viii) Explain the difference between regression and correlation.

(ix) Components of time series.)

(x) Define Interpolation.

(xi) Why Fisher's Index is called Ideal?

(xii) Merits and demerits of Least Square Method. 9x2=18

UNIT-I

5. (a) Solve the following equation by matrix method:

x + y + z = 1

x + 2y + 3z = 6

x + 3y + 4z = 6.

b) The mean and standard deviation of a set of 100 observations were found to be 40 and 12 respectively. On checking it was found that two observations were wrongly taken as 23 and 15 instead of 43 and 18. Find the correct mean and SD.9+9