The Five-Number Summary of Credit Hours for 24 Students in a Statistics

question 121

Multiple Choice

The five-number summary of credit hours for 24 students in a statistics class is: $$\begin{array} { | c | c | c | c | c | } \hline \text { Min } & \text { Q1 } & \text { Median } & \text { Q3 } & \text { Max } \\\hline 13.0 & 15.0 & 16.5 & 18.0 & 22.0 \\\hline\end{array}$$ Which statement is true?

• A) There is at least one high outlier in the data.
• B) There are no outliers in the data.
• C) none of these
• D) There is at least one low outlier in the data.
• E) There are both low and high outliers in the data.

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Definitions:

Confidence Interval

A set of values, calculated from sample statistics, predicted to hold the value of an unobserved population parameter.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating how much the values differ from the mean.

T-Distribution

A probability distribution used in statistics that arises when estimating the mean of a normally distributed population in situations where the sample size is small and population variance is unknown.

Confidence Interval

A range of values, derived from the sample data, that is believed, with a certain degree of probability, to contain the true population parameter.