Saturday, December 4, 2010

Stem and Leaf Plot



According to Washington University, "A stem-and leaf-plot offers an alternative to a line plot or histogram for obtaining a picture of the data distribution when data can be represented as integer numbers."

This stem-and-leaf plot represents grades earned by a student.  The stem is representative of numbers to the tenth power and the leaves represent numbers to the first power.  With the information given in the stem-and-leaf plot above; the lowest grade earned is 16 and the highest is 96.  By viewing this stem-and-leaf plot; it is easy to quickly ascertain that this students grades are more frequent below 70.  This form of imagery could make it simpler and faster to prove a student's grade, rather than opening a grade book.

The link below is used to reference statements from Washington University.

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