sampling Flashcards

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1
Q

what is a population

A

an entire group with specified characteristics

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2
Q

what is a target group

A

the desired population subgroup to be studied

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3
Q

why are sampling methods used

A

a target group is usually too large to study in its entirety

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4
Q

what is a representative sample

A

a subset of the target group with a similar distribution of relevant characteristics to the target group

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5
Q

what is a random sample

A

a sophisticated form of sampling in which all members of the target population have an equal chance of being selected

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6
Q

what are the advantages of random sampling

A

free from researcher bias, more representative than other sampling methods

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7
Q

what are the disadvantages of random sampling

A

time consuming, may still be unrepresentative

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8
Q

what is systematic sampling

A

selecting every nth participant on a list

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9
Q

what are the advantages of systematic sampling

A

avoids researcher bias, fairly representative

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10
Q

what are the disadvantages of systematic sampling

A

time consuming

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11
Q

what is opportunity sampling

A

selecting anyone who is willing and avaliable to take part in an experiment

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12
Q

what are the advantages of opportunity sampling

A

convenient, cost and time effective

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13
Q

what are the disadvantages of opportunity sampling

A

unrepresentative, researcher bias

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14
Q

what is volunteer sampling

A

participants self-selecting to take part in the experiment

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15
Q

what are the advantages of volunteer sampling

A

less time consuming than other methods

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16
Q

what are the disadvantages of volunteer sampling

A

volunteer bias, issues with generalisability

17
Q

what is stratified sampling

A

identifying different strata in the population and choosing proportional amounts of participants from each strata to take part in the experiment

18
Q

what are the advantages of stratified sampling

A

avoids researcher bias, representative sample, generalisable

19
Q

what are the disadvantages of stratified sampling

A

time consuming, strata may not reflect all sub-groups, complete representativeness is not possible