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Published byWinifred Parks Modified over 7 years ago

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BOX PLOTS (BOX AND WHISKERS)

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Boxplot A graph of a set of data obtained by drawing a horizontal line from the minimum to maximum values with quartiles labeled in between. It is a graphical plot of 5 specific values called the 5- number summary.

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5-number summary….. Minimum – lowest number in set Q1- middle number of the lower half Median – middle number of entire set Q3 – middle number of upper half Maximum – highest number in set

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Steps…… 1. Find the 5-number summary. 2. Draw and label a scale of equal intervals. 3. Place dots above the 5 numbers 4. Put a box around Q1 and Q3. 5. Draw a vertical line through the median. 6. Draw “whiskers” from the minimum to Q1 and maximum to Q3.

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Example…… Draw a box plot of the following data. 33, 38, 43, 30, 29, 40, 51, 27, 42, 23, 31

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Example…… Draw a box plot of the following data. 59, 60, 65, 52, 51, 64, 71, 48, 40, 50

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5, 8, 13, 17, 22, 24, 25, 27, 29, 30

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8, 10, 22, 24, 25, 25, 26, 27, 45, 72 Graph & Describe

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5, 7, 9, 9, 10, 11, 13, 17, 29 Graph the Boxplot.

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22, 27, 33, 39, 57, 88, 110

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Comparative Measure your longest finger. Create boxplot of right vs left. Describe

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Assignment…… Worksheet (Both sides).

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