M.Tech.(By Research) COURSE WORK EXAMINATIONS

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Answer the following

1. a) Explain in detail on the collection of data using questionnaires and schedules (10)
b) Discuss on the selection of appropriate method for data collection (10)
(or)

2. a) Describe on the important measures of central tendency pointing out the situation (10)
when one measure is considered relatively appropriate in comparison to other
measures
b) Write notes on the decision making under certainty and uncertainty (10)

3. Describe briefly the commonly used sampling distributions (20)
(or)
4. a) Annual incomes of 900 salesman employed by John-Wrights Group is known to be
approximately normally distributed. If the group wants to be 95% confident that the true
mean of this year’s salesmen’s income does not differ by more than 2% of the last year’s
mean income of Rs.12000, what sample size would be required assuming the population
standard deviation to be Rs.1500? (10)
b) Discuss in detail on the various types of estimates. (10)

5. The procedure of testing hypothesis requires a researcher to adopt several steps.
Describe in detail on all such steps.