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# Elementary Statistics - Essay Example

Summary
This type of data provides information that is generally easier to analyze and is fairly more reliable. Examples include: national…

## Extract of sample"Elementary Statistics"

Download file to see previous pages Cluster sampling – this is closely related to stratified sampling in that; items are grouped according to their similar characteristics. However, the groups are not randomly chosen, there is an order in selecting the clusters.
Random sampling – in this method, each and every member of the population has an equal probability of being included in the sample. Selection is based entirely on chance and it is assumed that if this is the case it will be a sufficient representation of the whole population.
Chebyshev’s theorem – this theorem states that a proportion of data values must be within a particular number of standard deviations from the mean. This theorem applies to any set of data regardless of the data distribution ...Download file to see next pagesRead More
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