LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

QB 23

M.Com. DEGREE EXAMINATION – COMMERCE

THIRD SEMESTER – November 2008

    CO 3804 – RESEARCH METHODOLOGY

 

 

 

Date : 07-11-08                 Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

PART-A

Answer ALL questions.                                                        (10 x 2 = 20 marks)

 

1. Illustrate the objectives of Research
2. Define the Social Science Research
3. How do you form a Problem in Research?
4. Discuss limitations of Descriptive Research
5. Variables – Explain.
6. Classify the different types of Research design
7. What are the different types of Scaling?
8. Write a short note on Non parametric test.
9. Explain the term correlation.
10. What do you mean by Chi – Square?

 

PART – B

Answer any FIVE questions                                                                     (8 x 5 = 40 marks)

 

11. What is a Research process? Explain the various stages of Research
12. What are the merits and demerits of Case study approach?
13. Distinguish between Structured and unstructured Interview.
14. What are the Merits and demerits of stratified sampling?
15. Calculate Spearman’s coefficient of correlation between marks assigned

to ten students by judges X and Y in a certain competitive test as

shown below:

S.No.:                                        1      2        3        4        5        6        7        8        9        10

Marks by judge X:  52   53      42      60      45      41      37      38      25      27

Marks by judge Y:         65     68     43      38      77      48      35      35      25      50

16. The figures given below are (a) the observed frequencies of a distribution, and (b) the

frequencies of the normal distribution having the same mean, Standard Deviation and the total

frequency as in (a).

(a)     1        5        20      28      42      22      15      5        2

(b)     1        6        18      25      40      25      18      6        1

Apply the X2 test of goodness of fit at 5% level of significance.

H0: A normal distribution is a good description of the observed frequencies

H1: A normal distribution is a not a good description.           (Table Value = 9.49)

17. 1,000 individuals are exposed to a lecture on U.S.A – Iraq war and their response counted both

before and after the lecture:

 

Before Lecture

 

		No. Who favoured war	No. who disfavoured war	Total
After	No. who favoured	300	100	400
Lecture	No. who disfavoured	300	300	600
Total		600	400	1,000

Test at 5% level of significance whether there has been a significant change in people’s attitude towards war. Use McNemar test.    (Table Value = 3.84)

18. For nine animals, tested under control conditions and experimental conditions, the

following values of a measured variable were observed:

 

Animal No.          1        2        3        4        5        6        7        8        9

Control                 21      24      26      32      55      82      46      55      88

Experimental        18      9        23      26      82      199    42      30      62

 

Test Whether a significant difference exists between the medians, using the Wilcoxon

Signed Rank Test.

 

Let us first write the null and alternative hypotheses as under:

Ho          : There is no significant difference between the median values of control and

experimental conditions.

Ho  : There is significant difference between the median values of control and experimental

conditions.                                     Table Value N= 9 is 6.

 

PART-C

Answer any TWO questions                                                    (2 x 20 = 40 marks)

 

19. Discuss various approaches to research. Explain the factors that determine the selection of

a suitable approach.

 

20. Discuss the meaning and importance of scaling techniques in research. With a suitable

example for each explain Likert and Thurstone scaling techniques.

 

21. A tea company appoints four salesmen A, B, C and D and observes their sales in three

seasons—summer, winter and monsoon. The figures (in lakhs) are given in the following

table using coding methods Rs. 30 lakhs.

 

Salesmen

Seasons         ————————————————————   Season’s

A                B                 C                 D              Total

Summer                36               36               21               35               128

Winter                  28               29               31               32               120

Monsoon              26               28               29               29               112

Salesmen’s Totals    90               93               81               96               360

(i) Do the salesmen significantly differ in performance? Table Value= 1.619

(ii) Is there significant difference between the seasons?  Table Value= 1.417

 

 

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 LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

KP 50

M.Com. DEGREE EXAMINATION – COMMERCE

THIRD SEMESTER – April 2009

CO 3804 – RESEARCH METHODOLOGY

 

 

 

Date & Time: 24/04/2009 / 9:00 – 12:00  Dept. No.                                                  Max. : 100 Marks

 

 

SECTION: A

Answer All Questions:                                                                                       10 x 2 = 20

 

• What is Action Research?
• What criteria should a research problem satisfy?
• How does questionnaire differ from schedule?
• Define a hypothesis.
• What is the rationale of footnotes in a research report?
• Define Type I and Type II errors.
• Under what conditions is it appropriate to use a one – tailed test?
• What is Z test?
• Mention any two conditions to be satisfied for applying Chi square test?
• What do you understand by Non – Parametric tests?

 

SECTION – B

Answer any five only:                                                                                    5 x 8 = 40

 

• Explain the objectives of social research?

 

• How is research problem selected? Illustrate your answer with suitable examples

 

• Examine the merits and limitations of experimental approach to research?

 

• Distinguish between structured and unstructured interview.

 

• Describe the essential features of a research report.

 

• What is pilot survey? Explain its usefulness in the context of social research

 

• Ten students are selected at random from a college and their heights are found to be 100, 104, 106, 110, 118, 120,122,124,126 and 128 cms. In the light of these data discuss the assumption that the mean height of the students of the college is 110cm.

The table value of t at 5% level for 8 df is 2.306 and for 9 df is 2.262 and 10 df is 2.228 for a two tailed test.

 

• The following data is collected on two characteristics:

 

Particulars                   Smokers          Non – Smokers

Literate                             83                           57

Illiterate                            45                           68

Based on this can you say that there is no relation between the habit of smoking and literacy.

 

 

 

 

SECTION –C

 

Answer any two only.                                                                                        2 x 20 = 40

 

• Explain the stages involved in formulation of a research project.

 

• Discuss various approaches to research?

 

• The following data is relating to the units produced per day by 4 workers in 5 machines of different types. Test whether the four workers differ in terms of mean productivity and test whether the mean productivity is the same for the five different machines.

 

Workers	Machine Type
	1	2	3	4	5
1	10	9	8	12	10
2	11	9	8	12	10
3	13	10	9	10	11
4	14	9	8	12	12

 

 

• School children taking coaching in three private schools A,B and C secure the following scores out of 100.

 

No of Children	1	2	3	4	5	6	7	8	9	10
School – A	33	38	39	48	58	70	61	41	45	49
School – B	32	15	87	32	22	63	56	57	44	—
School – C	55	68	27	88	46	52	76	—	—	—

Test the hypothesis that the students in the three private schools have identical distribution of scores at significance level at 1 %. Apply H test.

 

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

M.Com. DEGREE EXAMINATION – COMMERCE

THIRD SEMESTER – NOVEMBER 2010

    CO 3804  – RESEARCH METHODOLOGY

 

 

 

Date : 03-11-10                 Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

                                                          SECTION-A

(Answer ALL questions)                                                    (10×2=20)

1. What is research?
2. What do you understand by objectivity in research?
3. Who should suggest the research topic? State the reasons for your answer.
4. What is case study?
5. What is meant by an operational design?
6. Should all researches need to have a hypothesis statement?
7. List out the prerequisites of thesis writing.
8. State some benefits of using encyclopedias in research.
9. A study of railway reservations is made for 10 days in the winter season to know if the number of daily reservations is uniform or not. From the following results, find out whether the distribution is uniform.(Apply chi- square test –Table value at 5% significance level is 16.919)

 

Days                     1           2             3              4              5             6             7             8          9          10

No. of Reservations        65        80            100           98           75            80           82          70         60         90

 

10. 1,000 individuals are exposed to a lecture on U.S.A – Iraq war and their responses were

counted  before and after the lecture.(Table value  =  3.84)

Before lecture

		Number who favoured war	Number who disfavoured war	Total
After Lecture	Number who favoured Number who disfavoured	300 300A	100B 300	400 600
TOTAL		600	400	1,000

Test at 5% level of significance whether there has been a significant change in the attitude of

the people towards the war.( Use McNemer test)

                                                           SECTION -B                   

(Answer any FIVE questions)                                         (5×8=40)                                                                                                                                                                                                  11. Briefly explain the objectives of research.

12. List out and explain the types of research design.
13. Write short notes on the following:
14. a) Summated rating scale b) Ratio scale c) Nominal scale d) Ordinal scale.
15. What is hypothesis? What are the characteristics of a hypothesis statement?
16. Write a brief note on observation technique.
17. What is a questionnaire? What are the types of questionnaire?
18. Two groups of high school students of, each containing 8 members, earn the following scores:

A                               19          28          14           23            14           17            12             15

B                               25          23          29           15            27           21            24             20

Do the two groups differ significantly? Apply the sum of Ranks Test.   (Table value at 5% significance

Level: Z= (+) or( –) 1.96)

 

18. The observed cumulative frequencies ( Fo ) corresponding to given values of X (Upper class

boundaries)  in a sampling experiment, are shown in the following table. The theoretical cumulative

frequencies ( Fe )  from a certain normal population are given below.

 

Upper Class Boundary (X)	Fo	Fe
20.5 22.5 24.5 26.5 28.5 30.5 32.5 34.5 36.5 38.5 40.5	2 9 24 73 162 300 402 469 505 510 511	0.6 4.5 20.9 68.5 161.7 287.6 401.4 471.5 500.8 509.2 511.0

 

Use the Kolmogrorov-Smirnov test at 1% level of significance to show that it is reasonable To accept the hypothesis that the population sampled had the normal distribution corresponding to the column  Fe.

 

SECTION-C

(Answer any TWO questions)                                                       (2×20=40)

 

19. Describe the various steps involved in the research process.
20. Discuss in detail the guidelines to be followed while conducting an interview.
21. Mercy Tea Store has three shops at three locations in the city. The owner keeps a daily record for each location of the three number of customers who actually make a purchase. A sample of the data is as follows. Using the Kruskal-wallis test, Can you say at 5% level of significance that the shops      have the same number of customers who buy?(Table value =5.991)

 

Location-A	Location-B	Location-C
99 64 101 85 79 88 97 95 90 100	83 102 125 61 91 96 94 89 93 75	89 98 56 105 87 90 87 101 76 89

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

M.Com. DEGREE EXAMINATION – COMMERCE

THIRD SEMESTER – NOVEMBER 2012

CO 3804 – RESEARCH METHODOLOGY

 

 

Date : 06/11/2012            Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

SECTION-A

Answer ALL questions:                                                                                                                 (10×2=20)

 

1. What do you mean by alertness in research?
2. State the uses of review of literature in research.
3. What do you mean by cause and effect relationship?
4. What is meant by variable?
5. How to set a research problem?
6. What is sample design?
7. What do you understand by degree of freedom?
8. What is covert observation?
9. List out the steps involved in using Median Test.
10. The theory predicts that the proportion of beans in the four groups A,B,C and D should be

9:3:3:1.In an experiment among 1,600 beans, the numbers in the four groups were

882,313,287 and 118.Does the experimental result support the theory? Apply Chi- square test

at 5% level of significance given the( Table value =7.815)

 

SECTION-B

Answer any FIVE questions:                                                                                                           (5X8=40)

 

11. List out and explain the criteria of good research.
12. Briefly explain the classification of research design.
13. Choose a topic for research and try to construct the objectives and hypothesis statements.

 

14. What are the aspects to be covered while the following reports are prepared?
15. a) Bank reports b) Educational reports c) Clinical reports.
16. What are the guidelines involved in drafting a standard questionnaire?
17. What is meant by objectivity in research? How to measure objectivity in research? State the

methods available to establish objectivity in research.

17. Two groups of high school students, each containing 8 members, earn the following scores:

A                       19          28          14           23            14           17            12             15

B                       25          23          29           15            27           21            24             20

 

Do the two groups differ significantly? Apply the sum- of -Ranks Test.   (Table value at 5%

significance level: Z= 1.96)

 

 

 

 

18. Jeya Tea Store has shops at three locations in the city. The owner keeps a daily record for

each location of the numbers of customers who actually make a purchase. A sample of the

data is as follows. Using the Kruskal-wallis test, Can you say at 5% level of significance that

the shops have the same number of customers.(Table value =5.991)

Location-A	Location-B	Location-C
99 64 101 85 79 88 97 95 90 100	83 102 125 61 91 96 94 89 93 75	89 98 56 105 87 90 87 101 76 89

 

 

 

 

SECTION-C

Answer any TWO questions:                                                                                                         (2X20=40)

 

19. Discuss the steps involved in the research process.
20. Enumerate the types, merits and demerits of interview method of collection of data.
21. a)Following are the performance scores of two groups of 13 and 12 executives trained by two

different methods

Method X	20	25	28	30	32	35	40	42	43	45	47	48	49
Method y	19	22	25	29	33	36	41	45	46	48	49	50	—

 

Test the H_O   that there is no difference in the effectiveness of the two training methods .Apply

Wald Wolfowitz test at 1% significance level.(Table value= 2.58)                                 (10) Marks

1. b) A large hospital hires most of its nurses from the two major universities in the area. Over the

last year, they have been giving a test to the newly graduated nurses entering the hospital to

determine which school, if either, seems to educate its nurses better. Based on the following

scores ( out of 100 possible points), help the personnel office of the hospital  to determine

whether   the schools differ in quality . Use the Mann- Whitney   U – test with a 5% level of

significance.      (Table value= 37)                                                                                            (10) Marks

Test Scores

School  A         97       69      73      84      76       92        90        88      84        87        93      —      —

School  B         88       99      65      69      97       84        85        89      91        90        87       91   72

 

 

 

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