Sampling (OCR A-Level Psychology): Flashcards
📚Flashcards
Practise the cards
15 cards from this deck
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Practise the cards
15 cards from this deck
Population (in research)
Population (in research)
Large group of individuals a researcher wants to study
Target population
Target population
A section of the general population
Sample (in research)
Sample (in research)
Smaller group selected from target population
Representative sample
Representative sample
Sample that reflects target population (allows generalisations)
Random sample definition
Random sample definition
All members have equal chance of being selected
Random sample advantage
Random sample advantage
Free from researcher bias
Systematic sample definition
Systematic sample definition
Every nth member of target population is chosen
Systematic sample advantage
Systematic sample advantage
Avoids researcher bias
Stratified sample definition
Stratified sample definition
Reflects proportions of people in certain sub-groups
Stratified sample advantages
Stratified sample advantages
Avoids bias & produces representative sample
Opportunity sample definition
Opportunity sample definition
Selecting anyone willing and available at the time
Opportunity sample advantage
Opportunity sample advantage
Convenient, saves time and money
Opportunity sample disadvantage
Opportunity sample disadvantage
Subject to researcher bias
Volunteer sample definition
Volunteer sample definition
Participants select themselves to be part of sample
Volunteer bias
Volunteer bias
Attracts keen & helpful people, affecting generalisability