The variable that cannot be illustrated by a stem-and-leaf plot is C. Number of doctor visits during the past year.
<h3>What is a stem and leaf plot?</h3>
It can be inferred that a stem and leafplot simply means the technique that is used to classify continuous or discretevariables.
In this case, the variable that cannot be illustrated by a stem-and-leaf plot is the number of doctor visits during the past year. This is because it's an ordinalvariable.
