Visualizing Data · Example 4

A collector of trading cards records the sale prices (in dollars) of a particular card on an online auction site, and puts the results in a stem-and-leaf plot:
$$\begin{array}{cc}\text{0}& \text{5 8 9}\\ \text{1}& \text{0 0 0 3 4 4 5 5 5 5 6 9 9}\\ \text{2}& \text{0 0 0 0 5 5 9 9}\\ \text{3}& \text{0 0 0 5 5}\\ \text{4}& \text{0 0 5}\\ \text{5}& \\ \text{6}& \text{0}\end{array}$$

Answer the following questions about the data:

(a) How many prices are represented?
(b) What prices represent the five most expensive cards? The five least expensive?
(c) What is the full set of data?

OpenStax, Contemporary Mathematics · §8.2 Visualizing Data · Example 4