Thursday, November 20, 2008

Stem and Leaf Plot



mainland.cctt.org/.../images/table2.gif


Stem and Leaf plots are fairly simple to read. The digit(s) in the greatest place value(s) are the data values of the stems. The digits in the next greatest place values are the leaves. For example, if all the data are two-digit numbers, the number in the tens place would be used for the stem. The number in the ones place would be used for the leaf. The plot above is an example of per capita GNP for Western Africa. The way the data is read is 1 : 80 is ahown as 180.

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