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  • Explain observation and experimentation with help of an example. What are different sources of secondary data information? (2 Marks)
  • What are the essential differences among nominal, ordinal, interval, and ratio scales? (1.5 Marks)
  • Discuss Sample versus Census. Describe the differences between a probability sampling and a non-probability sampling. (2 Marks)

4.Distinguish between: (1.5 Marks)

a.Direct and indirect questions

b.Open ended and closed questions

c.Research, investigative, and measurement questions.

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