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Tuesday, 13 March 2018

Research Methodology-Model question paper for PhD course work

1(a) What is the scientific method of research? Discuss the characteristics of scientific method. (04 Marks)
(b) Explain the terms null hypothesis and alternate hypothesis. (04 Marks)
(c) Explain the points to be considered in the process of identifying a research problem. (06 Marks)
(d) Explain the characteristics of a good hypothesis. (06 Marks)
2(a) Describe the various extraneous variables which if not controlled in an experiment may contaminate the effect of the independent variable. (04 marks)
(b) What is meant by the external validity of an experimental design? Explain. (06 Marks)
(c) Explain the importance of ‘inter-disciplinary type’ of research. (04 Marks)
(d) Examine critically the different experimental methods of data collection. (06 Marks)
3(a) How does questionnaire differ from a schedule? What are the advantages and disadvantages of a questionnaire? (06 Marks)
(b) What are the different methods used in the collection of primary statistical data? Explain them fully. (06 Marks)
(c)  Define secondary data. State their chief sources and point out the perils involved in their use and the precautions necessary while using them. (08 Marks)
4(a) State some advantages and limitations of attitude measurement scales. (06 Marks)
(b) What is the major limitation of using an ordeal measurement? (05 Marks)
(c) Describe briefly probability methods of sampling and non-probability methods of sampling. (06 Marks)
(d) In a population under study, there are 2000 women and 8000 men. If we are to select a sample of 250 individuals from this population, how many should be women to make our sample considered strictly representative? (03 Marks)
5(a) Processing of data implies editing, coding, classification and tabulation. Describe these 4 operations pointing out the significance of each in context of research study. (08 Marks)
(b) Explain Lagrange’s method and parabolic curve method of interpolation.(08 Marks)
(c) In a factory a machine takes 15 days to fabricate a machine, the second machine takes 18 days, the third machine takes 30 days and the fourth machine takes 90 days. Find the average number of days taken by the workers to fabricate the machine. (04 Marks)
6(a) What are the different type of statistical averages? Explain any two in detail. (08 Marks)
(b) Write a short note on McNemar test. (04 Marks)
(c) Explain standard error. (04 Marks)
(d) A fertilizer manufacturing company applies its own fertilizer to 5 plots which give the average yield of 100 kgs. On applying its competitor’s product to another set of 9 plots, the average yield comes to 125 kgs. Combined standard deviation for the 2 sets of 14 plots is 5.7. Is there any evidence of difference between the yields in the 2 samples? Use 5% level of significance. (04 marks)
7(a) Write a short note on Kruskal-Wallis test. (04 Marks)
(b) Write notes on profitability ratios and leverage ratios. (06 Marks)
(c)In a group of 15 identical twin pairs, one member of each pair is given special training, the other member of the pair acting as a control. In a final test, 10 of the trained twins were found superior to their twin controls, 4 were found inferior and in one pair the scores were found to be the same. Were the trained twins superior to the untrained? Apply the sign test. (04 Marks)
(d) 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 1600 beans, the numbers in the four groups were 882, 313, 287 and 118. Does the experimental result support the theory? Apply χ2 test at 5% level of significance. (06 Marks)
8(a) Write a note on preparation of oral presentation. (05 Marks)
(b) Explain the importance of a research report and state the various steps to be taken in writing such a report. (06 Marks)
(c) Write a note on plagiarism. (5 Marks)
(d) Write a note on usefulness of bibliography in a research report. (04 Marks)

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