CS Foundation :: Information systems and quantitative techniques : December 2003

Roll No…………………
Time allowed : 3 hours Maximum marks : 100
Total number of questions : 8 Total number of printed pages : 4
PART – A
(Answer Question No.l which is compulsory and any two of the rest from this part.)
1. (a) Give full forms of the following abbreviations :
(i)TPS
(ii)DVD
(iii)EDORAM
(iv)CASE
(v)ERP.
(5 marks)
(b) Convert the following from one number system to another number system as indicated against each, and show your working notes :
(i)(345)10 = ( )2
(ii)(256.875)10 = ( )2
(iii)(25)10 = ( )16
(iv)(F14)16 = ( )2
(iv)(1011101)2 = ( )8
(5 marks)
(c) State whether the following statements are true or false :
(i)Information system refers to set of people, procedures and resources that collects, transforms and disseminate information in an organisation.
(ii)DOS is an interactive, multi-user and multi-tasking operating system.
(iii)Multi-programming refers to the ability of an operating system to execute two or more tasks concurrently.
(iv)Non-impact printers use lasers, chemicals and heat to form the images on the paper.
(iv)SQL is an query language employed to retrieve data from databases.
(5 marks)
(d) 50 Students of a class appear in an examination that consists of total 10 subjects, each subject having maximum marks of 100. The roll number of each student, his name and the marks obtained by him in various subjects is supplied as input data.
Using proper symbols, draw a flow chart outlining the main segments of the algorithm to calculate the percentage of marks obtained by each student in the examination and then to print it along with his roll number and name.
(5 marks)
2. (a) Describe the systems approach method of solving problems.
(8 marks )
(b) What is ‘decision support system’ (DSS) ? Discuss its resources.
(7 marks )
3. Distinguish between any three of the following :
(i)‘Strategic’ and ‘transaction processing system’.
(ii)‘Third generation computers’ and ‘fourth generation comp uters’.
(iii)‘High-level languages’ and ‘low-level languages’.
(iv)‘Compiler’ and ‘interpreter’.
(v)‘Impact printers’ and ‘non-impact printers’
(5 marks each)
4. (a)Describe functions of ‘data base management systems’ (DBMS).
(8 marks)
(b)What are ‘object oriented programming languages’ ? such languages and briefly describe them.
(7 marks)
2/2003/ISQT P.T.O.


115

: 2 :

PART – B
(Answer Question No.5 which is compulsory and
any two of the rest from this part.)              
5. (a) Write short notes on any three of the following :
(i)Limitation of quantitative techniques
(ii)Laws of statistics
(iii)Primary and secondary data
(iv)Lorenz curve
(v)Business applications of linear programming.
(4 marks each )
(b) Fit a trend line to the following data by the method of least squares :
Year:
Production (Tons): 		1995
82		 1996
94		1997
96		1998
107		1999
100
Calculate the trend values and predict the value for the year 2004.
(8 marks )
6. (a) Describe the principles and basis of classification of data.
(8 marks )
(b) Calculate standard deviation from the following data :
Class Interval
0 - 10
10 - 20
20 - 30
30 -4 0
40 - 50
50 - 60
60 - 70
70 - 80		 Frequency
6
12
22
48
56
32
18
6
(7 marks )
7. (a) Average monthly income of all the workers of a company is Rs.6,000. Average monthly income of male and female workers of the company is Rs.6,200 and Rs.5,200 respectively. Find the percentage of male and female workers in the company.
(4 marks )
(b) From the following table, showing the income distribution of workers, find the percentage of workers earning between Rs.5,500 and Rs.8,800 :
Monthly Income
(Rs.)
0 - 2,000
0 - 4,000
0 - 6,000
0 - 8,000
  0 - 10,000		 No. of
Workers
150
250
330
380
400
(4 marks )
(c) Given the following information :
 
Mean
Standard deviaton		 Production
10 units
8 units		 Rainfall
8 cms
2 cms.
The coefficient of correlation between production and rainfall is 0.5.
Estimate the most probable yield when rainfall is 9 cms.
(7 marks )
8. (a)

Prove that Fisher’s Ideal Index formula satisfies time reversal test and factors reversal test.

(5 marks )
(b) Solve graphically the following linear programming problem :
Maximize Z = X + 3Y
Subject to X + 2Y < 9
X + 4Y < 11
X – Y > 2
X, Y > 0.
(7 marks )

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