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Sampling Techniques Statistics.

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Presentation on theme: "Sampling Techniques Statistics."— Presentation transcript:

1 Sampling Techniques Statistics

2 Census A count or measure of an entire population US Census
Taken Every Ten Years…

3 Sampling Sampling Error
The difference between the results of a sample and those of a population.

4 Random Sample A sample in which every member of the population has an equal chance being selected

5 Simple Random Sample A sample in which every possible sample of the same size has the same chance of being selected. 1001!

6 Stratified Sample Splitting a sample into groups and randomly selecting a member from each group

7 Cluster Sample Divide a population into groups and select all of the members in one or more of the groups Zone 1 Zone 3 Zone 2 Zone 4

8 Systematic Sample Designing a method to pick out a sample (i.e. choosing every third person on a list)

9 Convenience Sample Not a Good Idea
Only sampling those available from the population Not a Good Idea


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