A box plot is a graph that characterizes the pattern of variation of the data. The plot simultaneously displays several measures of central tendency and dispersion of the data at hand.
The box plot provides the following information:
(1) the position of the median;
(2) the 25th and 75th percentiles (the 1st and 3d quartiles; these are the sides of the box);
(3) Lines extending from the sides of the box as far as the minimum and maximum values;
(4) Sometimes these lines will extend no further than one (or 1.5) interquartile range below the 1st quartile and above the 3d quartile; in this case points outside the lines will be individually identified
Browse Other Glossary Entries
Planning on taking an introductory statistics course, but not sure if you need to start at the beginning? Review the course description for each of our introductory statistics courses and estimate which best matches your level, then take the self test for that course. If you get all or almost all the questions correct, move on and take the next test.
Find the right course for you
We'd love to answer your questions
Our mentors and academic advisors are standing by to help guide you towards the courses or program that makes the most sense for you and your goals.
300 W Main St STE 301, Charlottesville, VA 22903