JNTUH MBA I SEM RM&ST QP-FEB -2010

CODE NO: R7-21003/MBA
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
MBA-I Semester Regular Examinations February -2010
RESEARCH METHODOLOGY AND STATISTICAL TOOLS
Time:3hours Max.Marks:60
Answer any Five questions
All questions carry equal marks

- - -
1. Advice each of the following persons on specific research study that he or she might find useful. Classify each proposed study as reporting, descriptive, explanatory or predictive.
(i) Manger of a restaurant
(ii) Plant manager of a shoe factory
(iii) Human Resource manager at university
(iv) Office manager for a pediatrician
(v) Head of an academic department committee.
2.a) Explain the role of SPSS in the data presentation and tabulation.
b) Explain the following.
(i) Questionnaire (ii) Stratified sampling (iii) Gauss method.
3.a) Discuss the relative merits and problems with:
(i) Rating and ranking scales
(ii) Likert and differential scale.
b) Distinguish between the following.
(i) Descriptive and cansval studies.
(ii) Experimental and ex-post factor research designs.
4 Research reports often contain statistical materials of great importance that are presented poorly. Find examples of research reports, annual reports, or government reports that illustrate this point and devise ways to improve their presentation.
5. The cross classification of marks obtained by 105 students in statistical and finance are as given below.
Marks in statistics
50-54
50-59
60-64
65-74
Total
50-59
4
6
8
7
25
60-69
-
10
12
13
35
70-79
16
9
20
-
45
80-89
-
-
-
-
-
Total
20
25
40
20
105
CONT…2

CODE NO: R7-21003/MBA ::2::
Find the following
a) Number of students obtaining more than 54 marks in statistics and those obtaining less than 70 marks in finance and
b) Co-efficient of correlation between the marks obtained in the two subjects.
6. The following is a record of number of bricks laid each day by two masons A and B :
A: 700, 675, 725, 675, 800, 650, 675, 625, 700 and 650
B: 600, 625, 675, 575, 650, 625, 600, 625, 550 and 700
Calculate the co-efficient of variation in each case and discuss the relative consistency of the two masons. If the figures for A where in every case 20 more and those of B in every case 10 more than the figures given above, how would the answer be affected?
7.a) You are given the annual profit figures for a certain firm for the years 2000-2006. Fit a straight line trend to the data and estimate the expected profit for the year 2010
Year : 2000 2001 2002 2003 2004 2005 2006
Profit (Rs. Lakhs) : 60 72 75 95 80 85 95
b) Ten persons were appointed in officer cadre in an office. Their performance was evaluated by giving a test and the marks were recorded out of 100. They were given two months training and another test was held and marks were recorded out of 100.
Employees
A
B
C
D
E
Before Training
80
76
92
60
70
After Training
84
70
96
80
70
By applying the T-test, can it be concluded that the employees have benefited by the training? Use 5% level of significance.
8 The following data has been constructed on the basis of 220 companies classified by the changes in earning and different stock exchanges. Examine whether they are independent or not?
Changes in Earnings
Stock exchanges
S1
S2
S3
Total
Large decrease
02
17
24
43
Moderate decrease
09
10
14
33
Small change
11
11
41
63
Moderate increase
06
17
23
46
Large increase
06
20
09
35
Total
34
75
111
220
Also examine the degree of dependence / independence.