types of sampling methods
- Created by: gracemae31
- Created on: 26-04-21 12:55
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- types of sampling methods
- random
- every member of TP have equal chance of being involved in research
- name pulling from hat (TP)
- - difficult to carry out if TP is too large
- + researcher has no influence, reducing bias
- every member of TP have equal chance of being involved in research
- stratified
- take each group in proportion from the TP
- randomly select numbers in same proportion as TP
- + most representativeof TP, results can be generalised to people in TP
- - difficult & time consuming, could put selves in wrong category
- take each group in proportion from the TP
- systematic
- every Nth person from TP
- e.g every 3rd person taken from TP
- + researcher has no influence, less bias
- - practically difficult if TP is too large
- every Nth person from TP
- volunteer
- people in TP volunteer
- adverts placed asking for people in TP
- - tend to be bias so cannot generalise, a lot of demand chracterisitcs
- + little effort for researcher, if pp eager means less likely to sabbotage
- people in TP volunteer
- random
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