Statistics : Basic Inferential Statistics

Study concepts, example questions & explanations for Statistics

varsity tutors app store varsity tutors android store

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:

\(\displaystyle \mu\)

None of these

\(\displaystyle s\)

\(\displaystyle \bar{x}\)

\(\displaystyle s^2\)

Correct answer:

\(\displaystyle \mu\)

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 \(\displaystyle \mu\)—is a population parameter that summarizes the population mean. The other choices are test statistics for the mean, standard deviation, and variance. 

Learning Tools by Varsity Tutors