Session 3: Sampling terminology
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Module I1 Session 3 Session 3: Sampling terminology Learning objectives At the end of this session students will be able to: 1. Explain basic sampling terminology 2. Find definitions in the resources provided in the training pack Overview There are a large number of terms about sampling that form part of the jargon of statisticians. In this session students will be asked to research the meaning of a list of terms with the intention of ensuring that they understand the precise definition of those terms. The session is suggested as a game in which each student has to complete his/her own glossary of sampling terminology by first looking up a subset of terms and then complete the full set by asking others to explain the terms that he/she has not been asked to look up. Stage 1. The rules of the game Explain to them that they have to find the definition for each of statistical terms in the list provided. This will be done first by them looking up a subset of definitions, then by sharing and explaining the definitions that they have looked up to other students. At the end of the activity the lecturer will cheery pick some students to explain a definition selected at random from the whole list. In order to allocate the definitions that each student will lookup use the table provided at the end of this handout. The table allows a full coverage of the terms regardless of the number of students. Read the explanation on the table. Students should use the resources provided in the DVD, mainly the glossaries of terms and CAST to compile the definitions of the statistical terms that he/she has been allocated. They need to learn the terms to such an extent that they can explain the terms to other students. The trainer may choose to bring sampling books or a statistical dictionary to complement the resources provided. If students have access to the web during this session they should be encouraged to use the web to look up some of the terms. SADC Course in Statistics Module I1 Session 3 – Page 1 Module I1 Session 3 Stage 2. Looking up statistical terms Each student should look up the statistical terms that he/she has been assigned. Stage 3. Checking the definitions Students should find another student who has researched the same term in order to check that they have understood the term correctly. All the terms should be doubled signed by a fellow student once he/she has checked the definition. Stage 4. Sharing knowledge Once all the terms that each student has researched directly have been double checked, each student should complete the full list of terms by finding a student who researched the terms for which he/she does not have the definition. Each student then becomes a provider of information for other students, and a seeker of information from other students. The activity continues until all the students have all the definitions in their glossary. A lot of activity and movement will take place in the classroom during this activity. The lecturer should expect this to be noisy and animated. Stage 5. Wrapping up The students should regroup as a classroom and the lecturer should ask at random for the definition of a term to at least 1/3 of the students in the class. SADC Course in Statistics Module I1 Session 3 – Page 2 Module I1 Session 3 List of sampling terms to be researched 1. 2. 3. 4. 5. 6. Accessibility sampling Cluster Sampling Finite population Finite population correction Infinite population Multistage Sampling 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. Post stratification Primary sampling unit Proportional allocation of stratum sample sizes Purposive sampling Quota sampling Sampling fraction Sampling frame Sampling terminology Sampling Unit Sampling with probability proportional to size 17. 18. 19. 20. 21. 22. 23. 24. Sampling with replacement Sampling without replacement Secondary sampling unit Simple Random Sampling Stratified Random Sampling Study Population Systematic sampling Target Population SADC Course in Statistics Module I1 Session 3 – Page 3 Module I1 Session 3 2 3 4 5 6 7 8 1 1. Accessibility sampling × 2. Cluster Sampling × × 3. Finite population × × × 4. Finite population correction × × × × 5. Infinite population × × × × × 6. Multistage Sampling × × × × × × 7. Post stratification × × × × × × × 8. Primary sampling unit × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × 9 10 11 12 Student 13 14 Statistical term 15 16 17 18 19 20 21 22 23 × × × × × × × × × × × × × × × × × × × × × × × × × × × 9. Proportional allocation of stratum sample sizes × 10. Purposive sampling × × 11. Quota sampling × × × 12. Sampling fraction × × × × 13. Sampling frame × × × × × 14. Sampling terminology × × × × × × 15. Sampling Unit × × × × × × × 16. Sampling with probability proportional to size × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × 17. Sampling with replacement × 18. Sampling without replacement × × 19. Secondary sampling unit × × × 20. Simple Random Sampling × × × × 21. Stratified Random Sampling × × × × × 22. Study Population × × × × × × 23. Systematic sampling × × × × × × × 24. Target Population × × × × × × × SADC Course in Statistics 24 Module I1 Session 3 – Page 4 × × Module I1 Session 3 SADC Course in Statistics Module I1 Session 3 – Page 5
