Frequency, Frequency Tables, and Levels of Measurement · Exercise 3

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{.4500} & \\ \hline \text{1} & \text{18} & & \\ \hline \text{3} & & & \text{.9333} \\ \hline \text{6} & \text{3} & \text{.0500} & \\ \hline \text{7} & \text{1} & \text{.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, Statistics · §1.3 Frequency, Frequency Tables, and Levels of Measurement · Exercise 3