1.1b Box & Whisker Plots
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1 Chapter 1 Bitsy Griffin
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Transcript of 1.1b Box & Whisker Plots
1Chapter 1 Bitsy Griffin
Minimum (min) Maximum (max) Median (med AND Q2) Quartiles (Q1, Q3) Interquartile Range Range
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Definition•Picture of how data is clustered without showing every value
Information needed•Minimum, Maximum AND Quartiles
•Use your calculator to find these
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Draw a number line with EQUAL intervals & evenly spaced.
Range on the number line should be a little larger than minimum and maximum.
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Leave space above the number line for the box.
Above the line, use points to mark the min, Q1, med/Q2, Q3, and max.
Draw the box and whiskers using the points as a guide.
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Weekly hours spent on homework
Our data: •Min 6 , Max 16, Med 10, Q1 7.5, Q3 12
What range and intervals should be used on the number line?
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Mark min, max, med, Q1, Q3
Draw Box & Whisker
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What’s the minimum? What is the maximum? What’s the range? What is the interquartile range?
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45, 37, 33, 16, 14, 11, 12, 8, 7, 13, 3, 5, 6, 3, 6, 4
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15.7, 18, 10.6, 13.9, 14, 23.5, 10.1, 11.9, 12.3, 26.6, 18.2, 12.8, 16.6, 11.6, 15.7
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