BCA II Sem (Y2K7) - Numerical and Statistical Methods Question Paper 2009

II Sem B.C.A Examination, June 2009

(Y2K7 Scheme)

COMPUTER SCIENCE

BCA 203 : Numerical and Statistical Methods

Time: 3 Hours                                                                                                                 Max.Marks: 60

Instructions: Answer all the sections.

SECTION - A

Answer any Eight.
1. Solve f(x) = eX- 3x = 0 using iteration method. Perform two iterations.
2. Explain shift operator.
3. Write Lagrange'sintenpolation formula for n variables.
4. Write the normal equations,for the curve of the form y = abx.
5. What is partial pivoting? Write the steps in partial pivoting.
6. If the mean and SD of a set of values are 12 and 3 respectively. Find the coefficient of variation.
7. The mean age of the first group of 80 boys is 10 years and that of second group of 20 girls is 15 years. Find the combined mean of boys and girls.
8. Prove that P(A)=l- P(A).
9. Define mathematical expectation of discrete and continuous random variable.
10. If x is a exponential variate with mean 4. Find P (0< X < 1).

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