AO1

• What is an opportunity sample?

  Recruiting those who are most convenient
• How does an opportunity sample work?

  It involves recruiting available individuals nearby
• What is a random sample?

  A sample selected by chance methods
• What methods can be used for random sampling?

  Lottery method, random number table, generator
• What is a stratified sample?

  Participants from subgroups in proportion to occurrence
• How are participants selected in a stratified sample?

  From identified subgroups using random techniques
• What is a systematic sample?

  Participants selected using a predetermined system
• How is a systematic sample typically selected?

  Selecting every nth person from a list
• What is a volunteer sample?

  Participants who respond to advertisements
• How do researchers typically recruit for a volunteer sample?

  By advertising in newspapers or online
• What are the five sampling methods in research?

  • Opportunity Sample
  • Random Sample
  • Stratified Sample
  • Systematic Sample
  • Volunteer Sample
• What are the characteristics of each sampling method?

  • Opportunity Sample: Convenient participants
  • Random Sample: Chance methods like lottery
  • Stratified Sample: Proportional subgroups
  • Systematic Sample: Predetermined selection system
  • Volunteer Sample: Interested participants from ads