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Questions and Answers
What type of sampling allows strong statistical inferences about the whole group?
What type of sampling allows strong statistical inferences about the whole group?
- Simple Random Sampling (correct)
- Snowball Sampling
- Purposive Sampling
- Convenience Sampling
In which type of sampling are individuals selected based on convenience or other criteria?
In which type of sampling are individuals selected based on convenience or other criteria?
- Systematic Sampling
- Stratified Sampling
- Cluster Sampling
- Convenience Sampling (correct)
What is the characteristic of Snowball Sampling?
What is the characteristic of Snowball Sampling?
- Handpick participants based on specific characteristics
- Start with a few participants and ask them to refer others (correct)
- Randomly select clusters
- Select every nth individual from a list
Which sampling method involves dividing the population into subgroups before sampling?
Which sampling method involves dividing the population into subgroups before sampling?
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What is the distinguishing feature of Purposive Sampling?
What is the distinguishing feature of Purposive Sampling?
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Study Notes
Probability Sampling
- Allows strong statistical inferences about the whole group
- Involves random selection of participants
- Examples include:
- Simple Random Sampling: each participant has an equal chance of being chosen
- Systematic Sampling: select every nth individual from a list
- Stratified Sampling: divide the population into subgroups (strata) and sample from each
- Cluster Sampling: randomly select clusters (e.g., schools, neighborhoods) and sample all individuals within those clusters
Non-Probability Sampling
- Based on convenience or other criteria, rather than random selection
- Examples include:
- Convenience Sampling: conveniently select available participants
- Purposive Sampling: handpick participants based on specific characteristics
- Snowball Sampling: start with a few participants and ask them to refer others
- Quota Sampling: set quotas for different subgroups and sample accordingly
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