day4 - Stem and Leaf Display Shows the rank order of the...

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Stem and Leaf Display Shows the rank order of the data. Shows the shape of the data set. Easy and quick to do by hand for small data sets. Example : Below are the ages for a sample of 40 individuals who participated in a mini-marathon in Naples, Florida. 49 33 40 37 56 27 26 31 44 46 57 55 32 52 35 21 50 52 43 64 40 72 66 43 46 24 30 37 43 44 59 50 31 43 50 36 61 43 31 47 Each number is broken into a stem and a leaf. Place the stems in increasing order to the left of a vertical line. 1
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To the right of the vertical line, place the leaves in ascending order. Modifications 1. We can stretch the display by using two stems where we previously had one. 2
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2. We can make stem and leaf plots when the data have more than 3 digits. Example : 1565 1852 1644 1766 1888 1912 2044 1812 1790 1679 2008 1852 1967 1954 1733 3
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Cross Tabulations Tabular summary of two variables. Example : A survey of commercial buildings asked what main heating fuel was used and what year the building was constructed. Year
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day4 - Stem and Leaf Display Shows the rank order of the...

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