Sampling

• What is the process of selecting a representative group to study called?

  Sampling
• What is the total group of individuals the researcher is interested in studying called?

  Target population
• Why are sampling techniques used?

  To choose a representative sample from a large population
• What do we call the group of people who take part in the investigation?

  Sample
• What does generalisability refer to?

  The extent to which findings apply to the target population
• Why does the sample need to be of a reasonable size?

  To justify extending findings to the target population
• What is sampling bias?

  When the sample does not reflect the target population
• What is the main factor that influences the choice of sampling method?

  Time and money
• What is random sampling?

  Every member has an equal chance of selection
• What is a strength of random sampling?

  It yields a representative sample
• What is a limitation of random sampling?

  It may not deliver a representative sample
• What is opportunity sampling?

  Choosing members who are willing and available
• What is a strength of opportunity sampling?

  It is quick and convenient
• What is a limitation of opportunity sampling?

  It is not representative of the target population
• What is volunteer sampling?

  Participants select themselves to take part
• What is a strength of volunteer sampling?

  It is less time-consuming and quick
• What is a limitation of volunteer sampling?

  It is unlikely to be representative
• What is systematic sampling?

  Selecting every nth member of the population
• What is a strength of systematic sampling?

  It avoids researcher bias
• What is a limitation of systematic sampling?

  It could lead to a biased sample
• What is stratified sampling?

  The sample reflects the target population's characteristics
• What is a strength of stratified sampling?

  It allows findings to be generalized
• What is a limitation of stratified sampling?

  It is time-consuming to identify strata
• What are the strengths and limitations of random sampling?

  Strengths:

  • Yields a representative sample
  • No researcher bias

  
  

  Limitations:

  • May not deliver a representative sample
  • Time-consuming for large populations
• What are the strengths and limitations of opportunity sampling?

  Strengths:

  • Quick and convenient

  
  

  Limitations:

  • Not representative
  • Researcher bias likely
• What are the strengths and limitations of volunteer sampling?

  Strengths:

  • Less time-consuming
  • Participants may be more engaged

  
  

  Limitations:

  • Unlikely to be representative
  • Volunteer bias present
• What are the strengths and limitations of systematic sampling?

  Strengths:

  • Avoids researcher bias

  
  

  Limitations:

  • Could lead to a biased sample
• What are the strengths and limitations of stratified sampling?

  Strengths:

  • Sample reflects target population
  • Findings can be generalized

  
  

  Limitations:

  • Time-consuming
  • Complete representation not possible
• What should you do to identify sampling techniques in a group activity?

  Use whiteboards
• What should you complete for homework regarding sampling?

  Workbook pages on sampling
• What is the purpose of the mini test next lesson?

  To assess understanding of sampling techniques
• What is the activity involving midget gems or skittles about?

  Sampling techniques' representation