Transcript [12-3] Box & Whisker Plots

[12-2B] Box & Whisker Plots
Learning Objective
Students will display and interpret
data in box and whisker plots.
CW/HW
P2357: Textbook, p. 695 #1-12
P4: Skills Practice
A box-and-whisker plot is a
diagram that summarizes the
data by dividing it into four parts.
Creating a box-and-whisker plot:
17,18,9,10,6,5,6,10,14,12,11,8
1) Order the data from least to
greatest.
5,6,6,8,9,10,10,11,12,14,17,18
5,6,6,8,9,10,10,11,12,14,17,18
2) Find the median.
(10+10) ÷ 2 = 10
3) Find the upper quartile, the
median of the top half.
(12+14) ÷ 2 = 13
4) Find the lower quartile, the
median of the lower half.
(6+8) ÷ 2 = 7
5,5,6,8,9,10,10,11,12,14,17,18
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13
5) Draw a number line that will fit
all your data.
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6) Plot the LE, LQ, M, UQ, UE.
LE=Lower Extreme (Low #)
UE=Upper Extreme (High #)
7) Draw your box & whiskers.
Boxes connect the median and quartiles
and whiskers connect the extreme to the
quartiles.
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10
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Create a box and whisker plot for the
data set:
12, 8, 4, 5, 6, 2, 3, 2, 1
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5
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15
[12-3] Review
Create a box and whisker plot for this set
of data. 5, 17, 9, 11, 12, 10, 9, 8, 7, 6
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5
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18