Which Type of Graph, a Stem-And-Leaf Diagram or a Frequency

Essay

Which type of graph, a stem-and-leaf diagram or a frequency histogram, would be more useful for the data set below? Explain your thinking. $$\begin{array} { r r c r c c c c r } 2.3 & 3.2 & 5.1 & 6.3 & 7.3 & 7.7 & 8.1 & 8.9 & 9.3 \\ 9.5 & 10.2 & 11.1 & 12.7 & 14.7 & 15.6 & 16.4 & 18.6 & 19.1 \end{array}$$