Term
Key Concepts
What are the 4 Nonprobability Samplings |
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Definition
- Availability Sampling
- Quota Sampling
- Purposive Sampling
- Snowball Sampling
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Term
Key Concepts
explain Availability sampling |
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Definition
| availability sampling or sometimes called convenience sampling, this is exactly what it sounds like choosing available subjects who are available or easy to find such as stopping people on the street to ask them questions/complete a survey. |
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Term
Key Concepts
Pros and cons of Availablility sampling |
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Definition
- Pros: Easy to do. may be used as a pilot study.
- Cons: you can never be certain what population the paricipants in the study represent
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Term
Key Concepts
Explain Quota Sampling |
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Definition
| this is where the researcher sets quotas to ensure the the sample you get represent certain characteristics in proportion to the prevalence in the population. |
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Term
Key Concepts
What are the pros and cons of Quota Sampling |
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Definition
- Pros: it compensates for the flaws of availability sampling
- Cons: no way of knowing if sample is representative in terms of any other characteristics. Interviewers often introduce bias when allowed to self-select respondents.
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Term
Key Concepts
Explain purposive Sampling |
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Definition
| Very specific. Purposive sampling is a sampling method in which elements are chosen based on purpose of the study. it does not produce a sample that is representative of a larger population, but it can be exactly what is needed in some cases. |
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Term
Key Concepts
Explain Snowball Sampling |
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Definition
| this is where a researcher identifies one member of some population of interest, speaks to him/her, then asks that person to identify others in the population that the researcher might speak too. |
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Term
Key Concepts
What are the Pros and Cons of Snowball Sampling |
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Definition
- Pros: Good for cases where members of a special population are difficukt to locate. leads the researcher into a realm he/she knows little about.
- Cons: Can be difficult to determine how the sample compares to the larger population.
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