Which of the following would usually require the smallest sample size because of its efficiency?
1). One stage cluster sampling
2). Simple random sampling
3). Two stage cluster sampling
4). Quota sampling
1. Which research does least depend on empirical facts
2. Which of the following is described the meaning of a declarative hypotheses
4. ........ from theory leads to Hypothesis
5. ........ is the raw materials for Analysis
6. Generally in a research conference the following person is not present