Sampling

Cards (29)

  • What is sampling in research?
    Selecting a small group from a larger group
  • Why is sampling necessary in research?
    Studying the entire population is too costly
  • How can you study teenagers' social media preferences effectively?
    Survey 100 teenagers from different schools
  • What is the definition of a population in research?
    The entire group of interest in a study
  • What is a sample in research?
    A smaller group chosen from the population
  • What is the difference between population and sample?
    • Population: Entire group of interest
    • Sample: Smaller group representing the population
  • What are the two main types of sampling techniques?
    Probability sampling and non-probability sampling
  • What does probability sampling involve?
    Randomly selecting individuals from the population
  • What is random sampling?
    Each member has an equal chance of selection
  • What is a disadvantage of random sampling?
    It may not be representative of the population
  • What is stratified sampling?
    Divides population into subgroups and selects from each
  • What is a key advantage of stratified sampling?
    Ensures representation from all groups
  • What is cluster sampling?
    Selects entire clusters of the population
  • What is a disadvantage of cluster sampling?
    It has a higher sampling error
  • What is a disadvantage of systematic sampling?
    Can be biased if there's a pattern
  • What does non-probability sampling involve?
    Does not involve random selection
  • What is convenience sampling?
    Selects readily available participants
  • What is systematic sampling?
    Selects every nth member from the population
  • What is a disadvantage of convenience sampling?
    High risk of bias and not representative
  • What is quota sampling?
    Selects participants based on pre-set quotas
  • Why is non-probability sampling often used?
    It is quicker and cheaper to implement
  • What is a disadvantage of quota sampling?
    Bias may occur in selection
  • What is purposive sampling?
    Selects participants with specific traits
  • What is a disadvantage of purposive sampling?
    May not be generalizable to the broader population
  • What is snowball sampling?
    Participants refer others to join the study
  • What is a disadvantage of snowball sampling?
    Limited scope and potential for bias
  • What are the advantages and disadvantages of probability and non-probability sampling techniques?
    Probability Sampling:
    • Advantages: Reduces bias, allows generalizations
    • Disadvantages: Can be complex and costly

    Non-Probability Sampling:
    • Advantages: Quick, cost-effective, targets specific groups
    • Disadvantages: Introduces bias, limited generalizability
  • How do the advantages of probability sampling compare to non-probability sampling?
    Probability sampling reduces bias, non-probability does not
  • How do the disadvantages of probability sampling compare to non-probability sampling?
    Probability sampling can be complex, non-probability is simpler