sampling techniques Flashcards
opputunity/convience sampling
recruting participants that are avaliable, (researchers at uni, recruting students)
limited due to repetiveness of subjects
stratum
section
stratified sampling
the characteristics atr decided and the distrubution is studied
the sample is recruited to keep proportions the same as observed
(school, 50% english, 25% french 25% spanish, need 2 english people, 1 french, 1 spanish
self selected sampling
voulenteers which have recruited
can be biased since they are looking for finantial aid
purpose sampling
specific set of traints
white women between 30-40
snowball sampling
looking for people who wouldnt respond to ads (prostitutes, drug dealers)
a participant can help you find them
random sampling
every member of population has equal chance of becoming part
all characteristics of population are taken to an account
improves generalisability
acronym for samplying bias
young
attractive
verbal
intellectual
social
YAVIS
anecdotal
evidence relying on personal experience
empirical
emprical data, through the scientific method (observations, experimentations)
not able to test the validity of a theory
unfalsifiable
predictive validity
theory which describes what is happening and predicts behaviour
control group
not affected by the IV
samping tecnhiques 6
stratisified
snowball
purposive
random
opputunity
self-selective
