Constructing a box and whisker plot

First, find the median which is the middle of all the terms arranged in order.
Then use a similar method to find the first and third quartile.
http://www.physics.csbsju.edu/stats/box2.html
 
    Constructing a box and whisker plot: Here's a word problem that's perfectly suited for a box and whiskers plot to help analyze data. Let's construct one together, shall we?