The Institute of Company Secretaries of India 2006 CS Foundation , - Information System And Quantitative Techniques - Question Paper

CS Foundation Examination, Dec. 2006
info System And Quantitative Techniques

RollNo..........................
Time allowed : three hours
Maximum marks : 100
Total number of ques. : eight
Total number of printed pages : four

PART—A
(Answer ques. No.1 which is compulsory and any 2 of the rest from this part.)


1. Attempt any 4 of the subsequent : (5 marks each)

(i) discuss the kinds of info system.

(ii) discuss the characteristics of decision support system.

(iii) What is ‘optical disk’ ? discuss.

(iv) what are the concepts of data structure.

(v) What do you understand by query languages ? provide examples.


3. Write notes on any 3 of the subsequent : (5 marks each)

(i) CASE tools

(ii ) Computer crimes

(iii ) Value and cost of info

(iv) Networking software’s.


4.
(a) elaborate the basic roles performed by info system in an organisation ? explain various resources used by an info system. (7 marks)

(b) (i) describe ‘number system’. What is ‘base’ or ‘radix’ of number system ? (2 marks)

(ii) Convert the subsequent from 1 number system to a different number system as indicated against each, and also show workings clearly : (6 marks)

(187)= ( ? )
10 16
(0.875)10 = ( ? )2 (C14A)= ( ? )
16 10


PART—B
(Answer ques. No.5 which is compulsory and any 2 of the rest from this part.)

5. (4 marks each)
(a) explain the important features of operations research. Name a few of the operation research techniques.

(b) State the limitations of statistics.

(c) Compare mean, median and mode.

(d) Discuss the significance of time series analysis.

(e) Draw ‘less than’ and ‘more than’ ogives for the subsequent distribution of weekly wages of 100 workers:

Weekly Wages (Rs.)0–100100–200 200–300 300–400400–500
No. of Workers eight 30 35 20 seven


6.
(a) Distinguish ranging from the following: (3 marks each)

(i) ‘Primary data’ and ‘secondary data’.

(ii) ‘Classification of data’ and ‘tabulation of data’.

(b) (3 marks each)

(i) Out of 100 numbers, 20 were 4’s, 40 were 5’s, 30 were 6’s and remainder 7’s. obtain the arithmetic mean of the numbers.

(ii) obtain the median of —
25, 14, 28, 30, 25, 15, 32.

(iii) 4 groups of students consisting of 15, 20, 10 and 18 individuals, reported mean heights of 1.62, 1.48, 1.53 and 1.40 meters respectively. obtain the mean height of all the students.


7.
(a) For a certain bivariate data, the 2 lines of regression are 5X–6Y+90 = 0 and 15X–8Y–130 = 0. Determine which line is regression of Y on X and which is regression of X on Y? obtain the means of X and Y values and coefficient of correlation ranging from them. (7 marks)


(b) Write a short note on ‘graphical solution of linear programming problem’. (4 marks)


(c) The price index of cosmetics was 110 in 1956 with base as 1950 and 120 in 1957 with 1956 as base. It further increased by 30% in 1958 in relation to the price index of 1957 and reduced by 10% in 1959 as compared to its level in 1958. obtain the index for 1959 with 1950 as base year. (4 marks)


8. (a) A manufacturer of television tubes has 2 kinds of tubes A and B. The tubes have respective mean life times XA=1495 hours and XB=1875 hours and standard deviations SA=280 hours and SB=310 hours. Which tube has the greater (i) absolute dispersion; and (ii) relative dispersion? (8 marks)

(b) Find the coefficient of linear correlation ranging from the variables X and Y presented in the subsequent table: (7 marks)
X13 four six eight 911 14
Y12 four 4 five seven eight nine

Earning:   Approval pending.