When one wants to group numerical data by tens, but visibly see each individual number, would choose to display data in a stem and leaf plot. Often used for straightforward data such as test scores, stem and leaf plots have the tens digit (for example: 5 in 56) of a number on the left side of a table separated by a line with the ones digit (6 in 56) all of the individual scores in that range across from it on the right hand side. In the graph above a regular class's test scores are depicted. 56 is the low score and 97 is the highest.
http://mrnussbaum.com/mathdrills/graphing/stemandleaf2.htm
No comments:
Post a Comment