15.4. Graphic Displays of Data http://www.ck12.org
Ahistogramdisplays frequencies of quantitative data that has been sorted into intervals. The following is a
histogram that shows the heights of a class of 53 students. Notice the largest category is 56-60 inches with 18
people.
Aboxplot(also known as abox and whiskers plot) is another way to display quantitative data. It displays the
five 5 number summary (minimum,Q1, median,Q3, maximum). The box can either be vertically or horizontally
displayed depending on the labeling of the axis. The box does not need to be perfectly symmetrical because it
represents data that might not be perfectly symmetrical.
Example A
Create a pie chart to represent the preferences of 43 hungry students.