Applications of Box-and-Whisker Plots
Using Technology to Construct a Box-and-Whisker Plot
The following numbers represent the number of siblings in each family for 15 randomly selected students:
Use technology to construct a box-and-whisker plot to display the data.
A box-and-whisker plot can be created with a TI-83 calculator as shown below:
Note that when creating a box-and-whisker plot with a TI calculator, you don't have to actually sort the data. The calculator will sort the data automatically when creating the box-and-whisker plot.
Listing the Five-Number Summary
List the five-number summary values for the data in the previous example .
The five–number summary can be obtained from the calculator in 2 ways.
a. The following results are obtained by simply using the TRACE feature and the left and right arrows:
The values at the bottom of each screen are the five-number summary.
Constructing Box-and-Whisker Plots
Construct a box-and-whisker plot using technology to represent the average number of sick days used by 9 employees of a large industrial plant. The numbers of sick days are as follows:
What are the values for the five-number summary?
The screens below show the five-number summary:
The values for the five-number summary are as follows:
The following data represents the number of flat-screen televisions assembled at a local electronics company for a sample of 28 days:
Using technology, construct a box-and-whisker plot for the data. What are the values for the five-number summary?
The values for the five-number summary are as shown below:
For each of the following box-and-whisker plots, determine the five-number summary and give one possible data set that could produce the box-and-whisker plot.
To view the Review answers, open this PDF file and look for section 7.12.