Statistics : Populations and Samples

Study concepts, example questions & explanations for Statistics

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Example Questions

Example Question #1 : Basic Inferential Statistics

Which of the following is not considered to be a test statistic of a sample population?

Possible Answers:

None of these

Correct answer:

Explanation:

A sample statistic is a calculation that describes a sample. Samples are representative of larger populations; therefore, test statistics provide us with insights of larger populations. On the other hand, populations are entire groups that are described by parameters. The greek letter mu—or —is a population parameter that summarizes the population mean. The other choices are test statistics for the mean, standard deviation, and variance. 

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