Levels of Measurement · Exercise 2
Sixty adults with gum disease were asked the number of times per week they used to floss before their diagnosis. The (incomplete) results are shown in.
\begin{array}{|c|c|c|c|}\hline \text{# flossing per week} & \text{Frequency} & \text{Relative frequency} & \text{Cumulative relative frequency} \\ \hline \text{0} & \text{27} & \text{0.4500} & \\ \hline \text{1} & \text{18} & & \\ \hline \text{3} & & & \text{0.9333} \\ \hline \text{6} & \text{3} & \text{0.0500} & \\ \hline \text{7} & \text{1} & \text{0.0167} & \\ \hline\end{array}
(a) Fill in the blanks in.
(b) What percent of adults flossed six times per week?
(c) What percent flossed at most three times per week?
OpenStax, Introductory Business Statistics 2e · §1.3 Levels of Measurement · Exercise 2
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