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Resourcd File


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Resourcd File

  1. 1. Edexcel GCSE 9-1 Psychology Topic 11 Research Methods Methods of sampling (pp. 136-7) Learning objectives: 1) To learn the meaning of target population and samples. 2) To learn about techniques to gather a sample of participants: random, stratified volunteer and opportunity. 3) To learn about the strengths and weaknesses of these sampling methods. Key terminology: try to write it in your own words! Try to draw a picture or a key word/phrase to help you remember each in the right hand column. Task 1: Target population Sample Generalisability Sampling method Random sampling technique Stratified sampling technique Sample error Volunteer sampling error Biased sample Opportunity sampling technique Task 2:
  2. 2. 1) In the box at right, draw a picture to illustrate what is meant by target population. Task 3: Identify which sampling technique is shown in each picture. a) b) c) d) Task 4: Complete the table to illustrate the strengths and weaknesses of each sampling method. Sampling type Random Stratified Volunteer Opportunity Strengths Weaknesses Exam questions: 1) Give two strengths of random sampling. 2) Give two weaknesses of volunteer sampling.