1. Box and Whisker Plots
34 41 68 88 94
Median
Lower
Quartile
Lower
Extreme
Upper
Quartile
Upper
Extreme
Interquartile Range

2. Box-and-Whisker Plots
• A box-and-whisker-plot is a
data display that divides
data values into four parts.
Ordered data are divided
into a lower and upper half
by the median.

3. Making a Box-and-Whisker Plot
Roller Coaster Heights (m)
35 42 44 60 60 70 76 78 81 100
Median =
Lower half Upper half
35 42 44 60 60 70 76 78 81 100
Lower Quartile Upper Quartile
30 40 50 60 70 80 90 100 110
35 44 65 78 100
Lower
Extreme
Upper
Extreme
60 42 100 81 78 70 60 76 44 35
Put in order from least to greatest.
(60 + 70) ÷ 2 = 65

4. Roller Coaster Heights w/ Top Thrill Dragster (m)
35 42 44 60 60 70 76 78 81 420
Median =
Lower half Upper half
35 42 44 60 60 70 76 78 81 420
Lower Quartile Upper Quartile
0 50 100 150 200 250 300 350 400
35 44 65 78
Lower
Extreme
Upper
Extreme
420
60 42 420 81 78 70 60 76 44 35
Put in order from least to greatest.
(60 + 70) ÷ 2 = 65

5. Runs scored by the Indians over 10 games
0 2 3 4 4 8 8 9 10 16
Median =
Lower half
= 6
Lower Quartile Upper Quartile
0 2 4 6 8 10 12 14 16
0 3 6 9 16
0 2 3 4 4 8 8 9 10 16
3 10 8 4 9 16 8 0 2 4
(4+ 8) ÷ 2
Upper half
Put in order from least to greatest.
Lower
Extreme
Upper
Extreme

6. Median = (65+ 71) ÷ 2 = 68
Lower half Upper half
Lower Quartile Upper Quartile
30 40 50 60 70 80 90 100
34 41 68 88 94
34 38 40 41 42 50 65 71 82 87 88 91 93 94
Homework
Put in order from least to greatest.
40 71 82 42 94 88 65 50 38 91 34 93 41 87
34 38 40 41 42 50 65 71 82 87 88 91 93 94
Lower
Extreme
Upper
Extreme

7. Making a Box-and-Whisker Plot
Median = (65+ 71) ÷ 2 = 68
34 41 68 88 94
Homework
Put in order from least to greatest.
40 71 82 42 94 88 65 50 38 91 34 93 41 87
34 38 40 41 42 50 65 71 82 87 88 91 93 94
Median
Lower
Quartile
Lower
Extreme
Upper
Quartile
Upper
Extreme
Interquartile Range

8. The following 4 slides could be used as student worksheets.
Go to:
1. File
2. Print
3. Slides: 9-12
4. Print what: Handouts
5. Slides per page: 2
6. Order: Horizontal
7. Color/Grayscale: Grayscale
8. Frame slides
9. Let me know if this print method is not possible for your
download.

9. Making a Box-and-Whisker Plot
Median =
Roller Coaster Heights (ft.)
60 42 100 81 78 70 60 76 44 35Put in order from least to greatest.

10. Median =
Put in order from least to greatest.
Roller Coaster Heights w/ Top Thrill Dragster (ft.)
60 42 420 81 78 70 60 76 44 35

11. Runs scored by the Indians over 10 games
Median =
3 10 8 4 9 16 8 0 2 4
Put in order from least to greatest.

12. Median =
Put in order from least to greatest.
Homework
40 71 82 42 94 88 65 50 38 91 34 93 41 87