Tuesday, May 10, 2011

WHAT ARE SAMPLING METHODS?
Random sample: every member of the target population has an equal chance of being selected for the sample.
Opportunity sampling: people who are members of the target population and are available and willing to take part.
Systematic sample: every ‘nth’ member of the target population is selected for the sample.
Stratified sample: to obtain this type of sample, the different subgroups in the target population are identified; then people are randomly selected from these subgroups in proportion to their numbers in the target population.


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