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Sunday, 22 July 2012

Research Methodology for PhD –Model question paper


1(a) What do you mean by research? Explain its significance in modern times. (4 Marks)
(b) Explain in detail different techniques involved in defining a research problem. (8 Marks)
(c) Write detailed notes on data collection and data analysis. (8 Marks)
2(a) Write a short note on data collection through telephone. (6 Marks)
(b) Explain the terms arithmetic mean, median, mode, geometric mean and harmonic mean. (10 Marks)
(c)  The growth rate of the demand of a product during last four years: 2008, 2009, 2010 and 2011 when compared to the demand of the base year 2007, are 20%, 30%, 35% and 40% respectively. Find the average growth rate of the demand of the product. (4 Marks)
3(a) Distinguish between restricted and unrestricted sampling. (8 Marks)
(b) Distinguish between systematic and stratified sampling. (8 Marks)
(c) Explain and illustrate the procedure of selecting a random sample. (6 Marks)
4 (a) Mention 6 differences between survey and experiment. (6 Marks)
(b) What are the guiding considerations in the construction of questionnaire? Explain. (6 Marks)
(c) Explain in detail different sampling distributions. (8 Marks)
5 (a) Explain the law of statistical regularity and the law of inertia of large numbers. (8 Marks)
(b) Describe briefly probability methods and non-probability methods of sampling. (8 Marks)
(c) The following data relates to the age distribution f 50 persons:
Age
20-30
30-40
40-50
50-60
60-70
70-80
No. of persons
3
7
14
16
8
2
Draw a histogram for the data and find the modal value. Check the value by direct calculation.  (4 Marks)
6(a) What is Sandler’s A-test. (6 Marks)
(b) Explain null hypothesis of hypothesis testing. (6 Marks)
(c) Write a note on measuring the power of a hypothesis test. Illustrate it with the help of an example. (8 Marks)
7(a) Explain in detail different parametric testing of hypothesis. (12 Marks).
(b) The specimen of copper wires drawn from a large lot have the following breaking strength in kg.wt: 578,572,570,568,572,578,570,572,596,544.Test (using student’s t-statistic) whether the mean breaking strength of the lot may be taken o be 578 kg.weight. Test at 5% level of significance. Verify the inference so drawn by using Sandler’s A-statistic as well. (8 Marks)
8(a)What do you understand by interpretation of data? Write a detailed note on its utility. (8 Marks)
(b) Describe the chief features of a good research report. Give suitable examples. (8 Marks)
(c) Mention important points to be taken care of during a power point presentation. (4 Marks)

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