Sampling: Simple Random, Convenience, systematic, cluster, stratified

Dr Nic's Maths and Stats

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171万回視聴・ 10638いいね・ 2012/03/14

Sampling: Simple Random, Convenience, systematic, cluster, stratified - Statistics Help

This video describes five common methods of sampling in data collection. Each has a helpful diagrammatic representation.

0:00 Introduction
0:15 Definition of a sample and population
0:45 Criteria - unbiased, representative
1:09 Sampling error
1:36 Simple random sampling
2:23 Convenience sample
2:55 Systematic sampling
3:26 Cluster sampling
3:59 Stratified sampling
4:44 Choosing a sampling method

A useful companion video explains what sampling error is: • Sampling error and variation in stati...

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