1. What do you understand by the term “Secondary Sources of Information? Explain various sources of secondary information.

2. What is a questionnaire? Can it be used in all situations? Why/why not? Discuss with suitable examples.

3. Write a short note on the following:

a. Analysis of covariance

b. Normal equations in regression analysis

c. Discriminant Analysis

d. Ethical issues in research

4. “Several types of graphs or charts are used to present statistical data”. In light of this statement, explain the graphical representation of data.

5. Distinguish between parametric and non-parametric tests. What is the importance of nonparametric tests? Explain.