HPED 2030 Lecture Notes - Lecture 1: Systematic Sampling, Quota Sampling, Random Number Table
29 Apr 2016
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Document Summary
In order to draw reliable and valid conclusions about the population: Only to the group of people from whom the sample was drawn. Random sampling: use random number table or computer. Stratified sampling: ensure subgroups fairly represented, males/females order population. 1st and then randomly sample within each group. Convenience sampling: take subjects wherever can be found, convenient for researcher. Theory vs practice random sampling not always possible. Simple random sampling: selection probability equal for each member, impartial, unbiased, random number table or computer. Stratified sampling: ensure subgroups fairly represented, males/females order population then random sample within. Convenience sampling: take wherever can be found, convenient for researcher. Quota sampling: ensure subgroups represented from wherever can find them. Snowball sampling: snowball sampling (chain referral, participants or informants refer the researcher to people they already have contact with, useful for groups that are not easily accessible via other strategies often vulnerable groups. Recruit a certain number of participants with characteristics of interest.
