Basic Inferential Statistics - Statistics
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Question
Which of the following is not considered to be a test statistic of a sample population?
Which of the following is not considered to be a test statistic of a sample population?
Answer
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.
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
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