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Build a Box and Whiskers
Plot
Box and Whisker plots are
related to median averages
First: Line up your numbers
2
5
3
6
12
9
1
4
2
4
Find the median
• Find the median of the top group.
• Find the median of the bottom group.
• Take note of the minimum and maximum values.
2
5
3
6
9
1
4
2
4
12
Build the plot
• The number spacing should be similar to the spacing in a number line
1
2
4
6
12
863 7 12111 42 5 109
Each number gets a bar above it.
• The box covers the middle three lines
6 121 42
Complete the Plot
• The whiskers extend out from the box.
• The plot below shows an unbalanced shift to the left.
6 121 42
Try One
12 13 14 15 16 17 18 19 20The above number line can be used as a pattern for the box
and whiskers plot.
14.8
12.2
20.3
18.7
16.4
15.7
17.2
15.9
18.9
16.6
16.3
15.1
19.1
13.3
16.4
12.5
Find the min, max, median, and Q1 & Q3 values
12 13 14 15 16 17 18 19 20The above number line can be used as a pattern for the box
and whiskers plot.
14.8
12.2
20.318.7
16.415.7 17.2
15.9
18.9
16.616.3
15.1 19.113.3 16.4
12.5
