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discuss sampling techniques appropriate to qualitative research (**when…
discuss sampling techniques appropriate to qualitative research
PURPOSIVE SAMPLING
pp's expected to offer the most appropriate / relevant data
SNOWBALL SAMPLING
less time + energy required
non-probability sampling method
existing pp's recruit future pp's
CONVENIENCE SAMPLING
non-probability sampling method
(availability sampling)
pp's are conveniently accessible + proximate to the researcher
CLUSTER SAMPLING
cluster selected might be different from other sections of target population
not true representation of target population
randomly select 1 group of target population
STRATIFIED SAMPLING
prevents 1 group from becoming over represented
only so many pp's from each category
RANDOM SAMPLING
random number generator picks pp's from target population
ideal method
**when voluntary
important differences between those willing / not willing to participate?
self-selection - could limit validity
lead to a sample that's of a specific type (e. confident)
volunteers - likely to be more enthusiastic = rich data
NOT completely representative of rest of target population
quick, easy + cheap