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Sampling (Method of Sampling - Probability (Simple random Sampling -…
Sampling
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Types of Sampling
Non-probability samples
- Probability of being chosen is unknown
- Cheaper - but unable to generalize
- Potential for bias
Probability samples
- Each elements / case has Equal chance to be selected
Idea of Sampling
- A shortcut method for investigating a whole population
- Data gathered on a small port of the whole parent population @ sampling frame & used to inform what the whole picture is like.
Why sampling needed
- Save Cost
- Save time
- Quick analysis