Basic Technical Mathematics, 11th Edition

CHAPTER 22 PRACTICE TEST

As a study aid, we have included complete solutions for each Practice Test problem at the end of this book.

1. Of the 32 injuries that happened at a factory in a certain year, 14 were hand injuries, 8 were back injuries, 6 were eye injuries, and 4 were other injuries. Make a bar graph of these data.

In Problems 2–4, use the following set of numbers.

$$5\hspace{0.17em},\hspace{0.17em}6\hspace{0.17em},\hspace{0.17em}1\hspace{0.17em},\hspace{0.17em}4\hspace{0.17em},\hspace{0.17em}9\hspace{0.17em},\hspace{0.17em}5\hspace{0.17em},\hspace{0.17em}7\hspace{0.17em},\hspace{0.17em}3\hspace{0.17em},\hspace{0.17em}8\hspace{0.17em},\hspace{0.17em}10\hspace{0.17em},\hspace{0.17em}5\hspace{0.17em},\hspace{0.17em}8\hspace{0.17em},\hspace{0.17em}4\hspace{0.17em},\hspace{0.17em}9\hspace{0.17em},\hspace{0.17em}6$$

2. Find the median.

3. Find the mode.

4. Draw a histogram using class limits of 1, 3, 5, … , 11.

5. The amounts of energy produced by a solar panel on a sample of 10 days are given below. Make a stem-and-leaf plot of the data.

   $$\begin{array}{cccccccccc}\text{9}\text{.4}& \text{8}\text{.5}& \text{10}\text{.7}& \text{9}\text{.6}& \text{7}\text{.2}& \text{8}\text{.7}& \text{8}\text{.2}& \text{9}\text{.1}& \text{7}\text{.9}& \text{9}\text{.4}\end{array}$$

In Problems 6–8, use the following data. The thickness ...