reserch methods p1 Flashcards
what is sampling
the process of selecting who will take part in the research
simple random sampling meaning
when a researcher pick people at random
disadvantage of simple random sampling
may produce incomplete sampling frames eg program will not indicate middle class students
advantage of simple random sampling
not biased
systemic sampling meaning
select every 10th or 20th name from the sampling frame
advantage of systemic sampling
unbiased chance of gaining a representive sample
stratified sample meaning
divide the reserch population into sub groups eg class , age , gender and randomly select people from each sub group
stratified sampling advantage
more likely to produce representative sample as the researcher can control variables
stratified sampling disadvantage
sampling frame may not have enough information to divide groups eg class register may not indicate middle class pupils
positivitist like what kind of data
quantitative
quota sampling meaning
researcher selects from a quota which states the number of individulals of certain characteristic to be included in the sample eg 10 men over 40 and ten under 30
interprevist like what kind of data
qualitative
quota sampling advantage
can be used when no samplinging frame is available as reserchers pick from characteristics not names
quota sampling disadvantage
may be subjective as reserchers are picking participants from looks eg certain people may not be asked to take part because they look untidy
snowball sampling meaning
a rearcher asks one person to take part in their reserch and then that person suggests another person and so on eg ask one drug dealer to participate then they suggest another drug dealer
snowball sampling advantage
access to hidden population with no sampling frames eg there are no list of sex workers
snowball sampling disadvantage
limited generalizabity because sample is drawn from personal networks it may not be representative of larger population
primary data
research carried out by sociogist first hand
sampling frame meaning
list of names of people in the research population eg school register
secondary data
data that already exists
PETVRR meaning
practical , ethical , theorectical , validity , representative , reliable
ethical meaning
doing what is morally right for your participants
dripp meaning
deception
right to withdraw
protection from harm
privacy
validity meaning
authentic picture
reliable meaning
there is a standardised procedure so reserch can be repeated
representative meaning
when a sample used in reasearch the same characteristics as the whole population . eg class , gender , ethnicity .
