L6 Flashcards

1
Q

Target population

A

Group who researchers are studying and want results from

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2
Q

Sample

A

Representative of the population

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3
Q

Random sampling

A

Every member of the target population has the same chance of being selected

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4
Q

Random sampling evaluation

A

(+) sample is representative
(+) no researcher bias so there’s an equal chance of being chosen
(-) difficult to gain full details of the target population
(-) not all members of the population will be selected or willing to take part

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5
Q

Systematic sampling

A

Participants are selected by taking every Nth person from the list

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6
Q

Systematic sampling evaluation

A

(+) less time consuming than random as every Nth is chosen rather than randomly selecting each person
(-) selection process may coincide with a hidden periodic trait
(-) not everyone may be willing or available so it’s unrepresentative

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7
Q

Stratified sampling

A

Classifying population into categories and randomly choosing a sample which consists of participants from each category/ strata

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8
Q

Stratified sampling evaluation

A

(+) all groups within the population are included so it’s representative
(-) time consuming as categories have to be identified and calculated

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9
Q

Opportunity sampling

A

Participants who are readily available and convenient to participate

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10
Q

Opportunity sampling evaluation

A

(+) Easiest method of ensuring large samples and its less expensive and time consuming
(-) sample wont be representative and people feel obligated to take part

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11
Q

Volunteer sampling

A

Participants volunteer to take part and volunteer through leaflet, radio, poster ads

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12
Q

Volunteer sampling evaluation

A

(+) less time consuming as all researcher needs to do is wait for response from ads
(-) mainly enthusiastic people who apply which wont be representative

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13
Q

Pilot study evaluation

A

(+) find any problems prior to the study
(+) make sure questions are understood
(-) expensive
(-) time consuming

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