Types_of_Qualitative_Research_Sampling.pptx

Research

1.  TELL ME WHAT IT IS?

2. H Who am I? start with the letter

3. L Who am I? end with the letter

4. C Who am I? start with the letter

5. Y Who am I? end with the letter

6. G Who am I? start with the letter

7. QUALITATIVE RESEARCH TYPES OF SAMPLING

8. Objective To be able to describes sampling procedures and sample

9. Which group of people are you interests in? How many people do you need in your sample? How will you select these people?

10. SAMPLING The process of selecting a number of individuals for a study in such a way that the individuals represent the larger group from which they were selected

11. SAMPLE Is “a smaller (but hopefully representative) collection of units from a population used to determine truths about that population” (Field, 2005)

12. Target population Study population Sample

13. TYPES OF SAMPLING Non-probability Sampling Probability Sampling

14. TYPES OF SAMPLING Non-Probability Sampling Convenience Sampling Purposive Sampling Snowball Sampling Quota Sampling Probability Sampling Simple Random Sampling Systematic Sampling Stratified Random Sampling Multi-stage sampling Cluster Sampling

15. SIMPLE RANDOM SAMPLING Selecting subjects so that all members of a population have an equal and independent chance of being selected

16.                                         Michelle Leo Jazzmin John Janelle Mario       SIMPLE RANDOM SAMPLING

17. STRATIFIED RANDOM SAMPLING The population is divided into two or more groups called strata, according to some criterion, such as geographic location, grade level, age, or income, and subsamples are randomly selected from each strata.

18.                                                                                STRATA       STRATIFIED RANDOM SAMPLING

19. MULTI-STAGE SAMPLING Use the two or more simple random sampling

20.                                                                                GROUP 1 GROUP 3 GROUP 2 STAGE 1 GROUP 1 STAGE 2 MULTI-STAGE SAMPLING      

21. CLUSTER SAMPLING The process of randomly selecting intact groups, not individuals, within the defined population sharing similar characteristics Clusters are locations within which an intact group of members of the population can be found Examples Neighborhoods School districts Schools Classrooms

22. Cluster sampling Section 4 Section 5 Section 3 Section 2 Section 1

23. SYSTEMATIC SAMPLING Selecting every K th subject from a list of the members of the population

24. SYSTEMATIC SAMPLING Selection process Identify and define the population Determine the desired sample size Obtain a list of the population Determine what K is equal to by dividing the size of the population by the desired sample size Start at some random place in the population list Take every Kth individual on the list

25. Systematic sampling

26. TYPES OF SAMPLING Non-Probability Sampling Convenience Sampling Purposive Sampling Snowball Sampling Quota Sampling Probability Sampling Simple Random Sampling Systematic Sampling Stratified Random Sampling Multi-stage sampling Cluster Sampling

27. CONVENIENCE SAMPLING the process of including whoever happens to be available at the time …called “accidental” or “haphazard” sampling

28. PURPOSIVE SAMPLING the process whereby the researcher selects a sample based on experience or knowledge of the group to be sampled …called “judgment” sampling

29. SNOWBALL SAMPLING It is when you don't know the best people to study because of the unfamiliarity of the topic or the complexity of events. So you ask participants during interviews to suggest other individuals to be sampled

30. Snowball sample                                                                                                                                                                                                                                                                                                                                                                  

31. QUOTA SAMPLING the process whereby a researcher gathers data from individuals possessing identified characteristics and quotas

32. QUOTA SAMPLING is a sampling technique whereby participant quotas are preset prior to sampling. Typically, the researcher is attempting to gather data from a certain number of participants that meet certain characteristics that may include things such as age, sex, class, marital status, etc.

33.    Quota sample                                                                                                                                                                                                                                                                                                                                                                                                               

34. Imagine that you have arrived in Surigao City to conduct a case study on working street children. A local social worker introduces you to two former street working children and you learn that they still have lots of friends still working on the street. As a way to identify participants for your study, you ask the two former street working children if they can recommend and invite some of their friends on the street to participate in the study. You also ask them to spread word of the study in anticipation that their friends will also help you to identify potential participants. How would you classify this kind of sampling?