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Published byJevon Blackney Modified about 1 year ago

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Stem and leaf diagrams and box plots Statistics

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Draw a stem and leaf diagram using the set of data below Work out the quartiles and hence draw a box plot Example 1

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Solution n = | 5 represents 135 Min = 87 Q1 = 104 Q2 = 111 Q3 = 135 Max = 148 Stem and leaf diagram Boxplot

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Example 2 Draw a stem and leaf diagram using the set of data below. Work out the quartiles and hence draw a box plot

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Stem and leaf diagram Solution n = 25 4 | 0 represents 40 Min = 40 Q1 = 48·5 Q2 = 53 Q3 = 59·5 Max = 72 Boxplot

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Example 3 Draw a stem and leaf diagram using the set of data below. Work out the quartiles and hence draw a box plot

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Solution Stem and leaf diagram n = | 5 represents 135 Min = 135 Q1 = 145 Q2 = 152 Q3 = 157 Max = 177 Boxplot

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Example 4 Draw a stem and leaf diagram using the set of data below. Work out the quartiles and hence draw a box plot

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Solution Stem and leaf diagram n = 40 2 | 3 represents 0.23 Min = 0·01 Q1 = 0·235 Q2 = 0·52 Q3 = 0·815 Max = 0·99 Boxplot

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