2012
(NovDec)
COMMERCE
Paper: 203
(Research Methodology and Statistical Analysis)
Full Marks: 80
Time: 3 hours
The figures in the
margin indicate full marks for the questions
1. (a)
Define business research. Discuss the need and importance of business research.
6+10=16
Or
(b) What are the methods of collecting primary data? Discuss
each of them with examples. 4+12=16
2.
(a) Write short notes on: 8x2=16
1)
Measure of Variation.
2)
Measure of Central Tendency.
Or
(b) Define index number and explain briefly the nature of
problems involved in the construction of index numbers. How are index numbers
useful for businessmen? 3+8+5=16
3. (a) Discuss the various approaches to
probability. Under what conditions is the classical approach not appropriate to
employ? 16
Or
(b) Eight coins are tossed at a time 256 times. Number of
heads observed at each throw is recorded and the results are given below. Find
the expected frequencies. What are the theoretical values of mean and standard
deviation? Calculate also the mean and S.D. of the observed frequencies. 8+2+6=16
No. of heads at a throw

Frequency

0
1
2
3
4
5
6
7
8

2
6
30
52
67
56
32
10
1

4.
(a) Define hypothesis. Distinguish between the null and alternative hypothesis.
State the null and alternative hypothesis regarding the population means that
lead to
1) Lefttailed
test.
2) Righttailed
test and
3) Two
tailedtest
And briefly explain type I and type II errors. 2+6+4+4=16
Or
(b) In a test given to two groups of students, the marks
obtained are as follows:
1^{st} group:

18

20

36

50

49

36

34

49

41

2^{nd} group:

29

28

26

35

30

44

46

Examine the significance of difference between the
arithmetic mean of the marks secured by the students of the above two groups.
(The value of t at 5% level of significance for y=14 is
2.14) 16
5.
(a) 4 coins were tossed 160 times and the following results were obtained: 16
No. of heads:

0

1

2

3

4

Observed frequency:

17

52

54

31

6

Under
the assumption that coins are balanced, find the expected frequencies of
getting 0, 1, 2, 3, or 4 heads and test the goodness of fit. 16
Or
(b) Explain the following components of a research report. 4x4=16
1)
Abstract.
2)
Executive Summary.
3)
Synopsis.
4)
References.
***
Post a Comment
Kindly give your valuable feedback to improve this website.