IGNOU BCOC-134 December 2024 Previous Year Question Paper

Q1.(a) Answer the following (any four) : 2.5x4=10 @) Under what conditions two matrices are said to be equal ?

(ii) What is inverse matrices ?

(iii) Give one example from linear function and quadratic function.

(iv) What is the a of y=f(x).g(x) ?

(v) Write formula for simple interest and compound interest.

(b) Answer the following (any four) : 2.5x4=10 G@) What are data in Statistics ? Gi) What is relationship between A. M. and G. M.? @ii) Write the formula for Spearman’s rank correlation coefficient.

(iv) What are base year and current year in Index number ?

(v) What are the two models for analyzing time series ? Part—A Note : Answer any two questions from this Part.

Q2.Explain in detail the Input-Output Analysis in the context of matrix algebra.

Q3.Given the following data : 20 Fixed cost = = 9,00,000 Variable cost = = 300 per unit Selling price = = 750 per unit Calculate Cost function C (X) and Revenue function R (X) for X units of product. Also find break-even point and profit at quantity = 1000.

Q4.Find aw (any four) : 5x4=20 1

(7)

Q5.y=x*

(iii) x? + y? =25

(iv) y=u® and u=8x+9

(v) y=loguandu =(2? +5)

Q6.Calculate the amount and the compound interest on % 12,500 for 3 years, the rates of interest for the successive years being 6%, 8% and 10% respectively. 20 Part—B Note : Answer any two questions from this Part.

Q7.What is Statistics ? Explain the importance of statistical methods in different fields.

Q8.Compute mean and standard deviation from the following data : 20 Class Frequency 0—20 17 20—40 28 40—60 32 60—80 24 80—1

(00)

Q9.Find the regression equation of X on Y by the method of least square : 20 3 2 5 3 6 4

(8)

Q10.(a) Explain different tests for Index number.

(b) Explain different components of time series.

Q11.5x4=10

Q12.5x4=10 5x4=20 Gi) yx"

(ii) x2 + y2 = 25

(iv) y=u? और u=3x+9

(v) y=logu और u=(x? +5) 20—40 28 40—60 32 60—80 24 80—100 19 x Y 3 2 5 3 6 4 8 6 9 5 dW