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Statistical Methods 13 Sampling Techniques

Community project encouraging academics to share statistics support resources All stcp resources are released under a Creative Commons licence Statistical Methods 13 Sampling Techniques Based on materials provided by Coventry University and Loughborough University under a Na9onal HE STEM Programme Prac9ce Transfer Adopters grant Peter Samuels Reviewer: Ellen Marshall Birmingham City University University of She eld Workshop outline We will consider: q Sampling Techniques : Non-random Random Peter Samuels Reviewer: Ellen Marshall Birmingham City University University of She eld Sample surveys Subjects included in a study can be selected using either: q A non-random Sampling approach, or q A random Sampling approach Peter Samuels Reviewer: Ellen Marshall Birmingham City University University of She eld Non-random sam

Random sampling methods ! Simple Random Sampling: Every member of the population is equally likely to be selected) ! Systematic Sampling: Simple Random Sampling in an ordered systematic way, e.g. every 100th name in the yellow pages ! Stratified Sampling: Population divided into different groups from which we sample randomly !

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