sampling Flashcards

(3 cards)

1
Q

what is random sampling

A
  • all members of target population are given a number
  • numbers then picked using a random number generator
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2
Q

what is stratified sampling

A
  • population divided into groups and people selected at random
  • number from each group is proportional to size of the group
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3
Q

what is quota sampling

A
  • people picked at random who fit into a certain category
  • usually used for opinions
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