Sampling Methods Flashcards

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1
Q

what’s random sampling?

A

every member of target population has an equal chance of being selected - eg names out of a hat or number generator

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2
Q

what’s stratified sampling?

A

a proportional representation of the target population - broken down into gender, age etc

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3
Q

what’s opportunity sampling?

A

the sampler selects participants from whoever is available at the time

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4
Q

what’s volunteer sampling?

A

participants put themselves forward to be put into the sample

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5
Q

what’s systematic sampling?

A

every nth member of population is selected

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6
Q

strength of random sampling

A

unlikely to be biased, all members of target population have an equal chance of being chosen

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7
Q

weakness of random sampling

A

can take a long time if target population is large

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8
Q

strength of stratified sampling

A

very representative of the population if done correctly

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9
Q

weakness of stratified sampling

A

very time consuming and can be difficult

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10
Q

strength of opportunity sampling

A

convenient, quick, likely to be ethical

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11
Q

weakness of opportunity sampling

A

usually less representative and biased

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12
Q

strength of volunteer sampling

A

participants would be very motivated, easy, access to a variety of people you might not usually have access to

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13
Q

weakness of volunteer sampling

A

participants are most likely to all be similar, more willing and eager to please than wider population

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14
Q

strength of systematic sampling

A

avoids researcher bias, usually fairly representative

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15
Q

weakness of systematic sampling

A

not truly unbiased/random unless you select a number using a random method

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