1Sampling notes for Quanti Research - Repaired.pptx

Research Sampling

1. Type of sampling procedure

2. Sample size of 30 is generally adequate

3. Universal sampling if population is less than or equal to 100

4. Descriptive research - 10% - 20%

5. Correlational research - 30 subjects / respondents

6. Comparative research - 15 subjects / groups

7. Experimental research - 15 - 30 subjects per group

8. KINDS OF SAMPLING

9. PROBABILITY NON -PROBABILITY

10. PROBABILITY Probability Samples – use random sampling techniques to create a sample and is the best method to achieve a representative sample

11. Simple Random

12. Cluster

13. Stratified random

14. Systematic

15. where: k = freque n cy interval N = the total number of wider population n = the required number in the sample.

16. 1 2 3 4 7 8 9 10 13 14 15 16 19 20 21 22 23 5 11 17 24 6 12 18

17. where: k = 4 N = 24 n = 6

18. 1 2 3 4 7 8 9 10 13 14 15 16 19 20 21 22 23 5 11 17 24 6 12 18

19. NON- PROBABILITY NON-PROBABILITY SAMPLING TECHNIQUES- use non-random processes such as researcher judgement or convenience sampling.

20. Convenience

21. R

22. Quota

23. R

24. Purposive

25. R

26. R

27. Snowball

28. R 1 4 5 6 7 2 3