Sampling Methods Flashcards

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1
Q

sampling - sample

A

selecting units from a population to study to generalise results

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2
Q

sampling - representative sample

A

contains relevant characteristics of survey population to be able to generalise to them

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3
Q

sampling - representativeness is affected by:

A
  • sample size (larger=more representative)
  • sampling frame: list of those in survey population (must be complete)
  • sampling method (techniques used to select individuals must be generalisable and accurate to whole survey population
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4
Q

sampling - random sampling

A

every individual in survey population has equal chance of being selected
subject to laws of chance - unrepresentative

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5
Q

sampling - systematic sampling

A

individuals selected from sampling frame at regular intervals
unrepresentative - due to chance

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6
Q

sampling - stratified random sampling

A

sampling fram subdivided into small sampling frames then individuals selected at random

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7
Q

sampling - quota sampling

A

interviewers select people that fit into categories

interviewer may be bias

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8
Q

sampling - snowball sampling

A

people w/characteristics relevant offer other people willing to cooperate in research until sample gradually builds up
useful when no sampling frame
not random/representative as sample is self-selecting (bias)

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