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Avicenna

System Analysis and Design                     System Analysis

12

Other Fact-Finding Techniques

Choosing the type of sample

Systematic sample

Simplest method of probability sampling

Choose every kth person on a list

Not good if the list is ordered

Stratified sample

Identifying subpopulations

Selecting objects or people for sampling from the subpopulation

Random sample

Chose randomly depending on the size of sample

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