Random sampling, Self selecting, Stratified, Snowball, Quota, Systematic, Theoretical
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Target Population
is the entire group a researcher is interested in.
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Representative
when the sample represents the target population
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Generalisabillity
can be used to make general assumptions about different groups
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Random Sampling
A random sample is a sample in which each individual or object in the population has an equal chance of being selected
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Benefits of Random sampling
every member of the larger population has an equal chance of being selected
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Limitations of Random sampling
Lack f control over choice of participants
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Self-Selective
in which individuals select themselves into a group
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Benefits of Self-Selective
Quick and easy
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Limitations of Self-Selective
Lacks generalisability
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Stratified
Classifying the population into groups
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Benefits of Stratified
Representative of target population
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Limitations of Stratified
Time Consuming
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Snowball
where existing study subjects recruit future subjects from among their acquaintances
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Benefits of Snowball
Easier to get sample
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Limitations of Snowball
Not Representative
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Quotas
Researchers select people according to some fixed standards
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Benefits of Quotas
Highly representative
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Limitations of Quotas
less representative that random and stratified
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Systematic
in which sample members from a larger population are selected according to a random starting point and a fixed periodic interval.
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Benefits of Systematic
quick and easy
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Limitations of Systematic
it is not truly random
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Theoretical samplying
a sample is chosen of individuals who have particular unusual characteristics in common
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Benefits of Theoretical samplying
useful for generating theory
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Limitations of Theoretical samplying
not representative
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Surveys
Phone, computerised in shops, internet survey, interview, through the post, given in restaurants, focus groups
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Qualitative Data
is typically descriptive data
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Quantitative Data
Quantitative data is information about quantities; that is, information that can be measured and written down with numbers.
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Open Questions
Open-ended questions are ones that require more than one word answers. The answers could come in the form of a list, a few sentences or something longer such as a speech, paragraph or essay.
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Closed Questions
If you can answer a question with only a "yes" or "no" response, then you are answering a close-ended type of question.
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Other cards in this set
Card 2
Front
Random sampling, Self selecting, Stratified, Snowball, Quota, Systematic, Theoretical
Back
Sampling Methods
Card 3
Front
is the entire group a researcher is interested in.
Back
Card 4
Front
when the sample represents the target population
Back
Card 5
Front
can be used to make general assumptions about different groups
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