Probability sampling technique: Simple random sampling, systematic random sampling, stratified random sampling, cluster sampling, etc.
ii.
Non-probability sampling technique: Snowball sampling, quota sampling technique, accidental or convenient sampling technique, etc. Sample designs that utilise planned randomness are calledprobability sampleswhile non-probability doesn‟t apply randomness as it is based on the subjective dictate of the researcher since all elements are not given equal chance of being selected. The most fundamental probability sample is the simple random sample. Ina simple random sample, a sample of n sampling units is selected in such away that each sample of size n has the same chance of being selected. In practice, other more sophisticated probability sampling methods are commonly used, but we would focus hereon simple random sampling technique.
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