Chapter 11, Problem 1CT

To determine

To make: a stem-and-leaf plot and a histogram of the data.

Answer to Problem 1CT

Ordered plot

  $\begin{array}{l}1\text{ 8}\\ 2\text{ 4 5 8 }\\ 3\text{ 0 2 2 5 8 9 9}\end{array}$

Explanation of Solution

Given information :

  $3.2,2.5,3.9,3.0,3.2,2.4,3.2,3.5,3.8,1.8,3.9,2.8$

Calculation : to find the ordered stem-and-leaf plot of the data write the stem first. Then record each distance by writing its ones’ digit on the same line as its corresponding stem.

Ordered plot

  $\begin{array}{l}1\text{ 8}\\ 2\text{ 4 5 8 }\\ 3\text{ 0 2 2 5 8 9 9}\end{array}$

Hence,

Ordered plot

  $\begin{array}{l}1\text{ 8}\\ 2\text{ 4 5 8 }\\ 3\text{ 0 2 2 5 8 9 9}\end{array}$

.