A CFO Is Looking at How Much of a Company's

Multiple Choice

A CFO is looking at how much of a company's resources are spent on computing.He samples companies in the pharmaceutical industry and develops the following stem-and-leaf graph. $\begin{array} { l l } 5 & 269 \\6 & 255568999 \\7 & 11224557789 \\8 & 001222458 \\9 & 02455679 \\10 & 1556 \\11 & 137 \\12 & \\13 & 255\end{array}$
What would be the class length used in creating a frequency histogram?

A) 1.4
B) 8.3
C) 1.2
D) 1.7
E) 0.9