Measures of the Spread of the Data · Exercise 20
Twenty-five randomly selected students were asked the number of movies they watched the previous week. The results are as follows:
\begin{array}{|c|c|}\hline \text{# of movies} & \text{Frequency} \\ \hline \text{0} & \text{5} \\ \hline \text{1} & \text{9} \\ \hline \text{2} & \text{6} \\ \hline \text{3} & \text{4} \\ \hline \text{4} & \text{1} \\ \hline\end{array}
(a) Find the sample mean .
(b) Find the approximate sample standard deviation, s.
OpenStax, Introductory Statistics 2e · §2.7 Measures of the Spread of the Data · Exercise 20
No hints for this one.
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