12.3 Box-and-Whisker Plots Objectives: Find the range, quartiles, and inter-quartile range for a data set. Make a box and- whisker plot for a data set.

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Presentation transcript:

12.3 Box-and-Whisker Plots Objectives: Find the range, quartiles, and inter-quartile range for a data set. Make a box and- whisker plot for a data set. Standards: 2.6.8E Analyze and display data in box- and-whisker plots.

These five values are referred to collectively as the “five point summary” for the data set.

TRY THIS: Find the 5 point summary and the IQR for the data set below. Identify any outliers min = 2 Q1 = 10 median = 33.5 Q3 = 51 max = 83 IQR = 41 Low Outliers? Q1 – 1.5(IQR) = 10 – 1.5(41) = 10 – 61.5 = No values below No low outliers High Outliers? Q (IQR) = (41) = = No values above No high outliers

Making a Box-and-Whisker on a Piece of Paper:

Page 786: Do #7 & 8

Homework pg. 786 # 15-22, ANOTHER EXTRA CREDIT OPPORTUNITY!! – p 786 # 23 – due Friday Quiz TOMORROW on 12.1 – 12.3 Optional Homework – worth 10 points if handed in tomorrow ~ 12-3 practice (front and back)