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Measures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker Plots A boxandwhisker plot uses a number line to show the distribution of a set of data. The box is drawn around the quartile values, and the whiskers extend from each quartile to the extreme data points that are not outliers.

Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

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Page 1: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

1

February 06, 2015

May 20­5:22 PM

Box­and­Whisker Plots 

A box­and­whisker plot uses a number line to show the distribution of a set of data.  The box is drawn around the quartile values, and the whiskers extend from each quartile to the extreme data points that are not outliers.

Page 2: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

2

February 06, 2015

Apr 30­7:58 PM

2, 3, 5, 6, 8, 9, 12, 12, 13

2 4 6 8 10 12 14

• First, be sure your data is arranged from least to greatest. 

• Now you are ready to construct the actual box & whisker graph. You will need to draw an ordinary number line that extends far enough in both directions to include all the numbers in your data.

Example:

Page 3: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

3

February 06, 2015

Mar 19­10:50 AM

• A box­and­whisker uses a number line to show the distribution of a set of data. • The box is drawn  around the quartile values• The whiskers extend from each quartile to the extreme data points that are not outliers.

Page 4: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

4

February 06, 2015

Feb 15­8:44 PM

Find the median of the entire set.

2, 3, 5, 6, 8, 9, 12, 12, 13

Page 5: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

5

February 06, 2015

Apr 30­7:58 PM

Medianof entire set

2, 3, 5, 6, 8, 9, 12, 12, 13

2 4 6 8 10 12 14

Page 6: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

6

February 06, 2015

Apr 30­7:58 PM

Medianof entire set

2, 3, 5, 6, 8, 9, 12, 12, 13

2 4 6 8 10 12 14

Page 7: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

7

February 06, 2015

Feb 15­8:53 PM

Find the median of the lower half - lower quartile.

2, 3, 5, 6, 8, 9, 12, 12, 13

Page 8: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

8

February 06, 2015

Apr 30­7:58 PM

2, 3, 5, 6, 8, 9, 12, 12, 13Median

of entire set

Median of lower halfLower Quartile

2 4 6 8 10 12 14

Page 9: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

9

February 06, 2015

Apr 30­7:58 PM

2, 3, 5, 6, 8, 9, 12, 12, 13Median

of entire set

Median of lower half

4Lower Quartile

2 4 6 8 10 12 14

Page 10: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

10

February 06, 2015

Feb 15­8:53 PM

Find the median of the upper half - upper quartile.

2, 3, 5, 6, 8, 9, 12, 12, 13

Page 11: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

11

February 06, 2015

Apr 30­7:58 PM

2, 3, 5, 6, 8, 9, 12, 12, 13Median

of entire set

Median of lower halfMedian of upper half

12

Upper Quartile

4Lower Quartile

2 4 6 8 10 12 14

Page 12: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

12

February 06, 2015

Apr 30­7:58 PM

2, 3, 5, 6, 8, 9, 12, 12, 13Median

of entire set

Median of lower half Median of upper half

12

Upper Quartile

4Lower Quartile

2 4 6 8 10 12 14

Page 13: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

13

February 06, 2015

Apr 30­7:58 PM

2, 3, 5, 6, 8, 9, 12, 12, 13Median

of entire set

Median of lower half Median of upper half

12

Upper Quartile

4Lower Quartile

2 4 6 8 10 12 14

Page 14: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

14

February 06, 2015

Feb 15­8:54 PM

The whiskers are the smallest and largest numbers - except when there are outliers.

2, 3, 5, 6, 8, 9, 12, 12, 13

Page 15: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

15

February 06, 2015

Apr 30­7:58 PM

2, 3, 5, 6, 8, 9, 12, 12, 13Median

of entire setLeast Value

Median of lower half Median of upper half

4 12

Lower Quartile Upper Quartile

2 4 6 8 10 12 14

Page 16: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

16

February 06, 2015

Apr 30­7:58 PM

2, 3, 5, 6, 8, 9, 12, 12, 13Median

of entire setLeast Value

Median of lower half Median of upper half

4 12

Lower Quartile Upper Quartile

2 4 6 8 10 12 14

Page 17: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

17

February 06, 2015

Apr 30­7:58 PM

2, 3, 5, 6, 8, 9, 12, 12, 13Median

of entire setLeast Value

Median of lower half Median of upper half

4 12

Lower Quartile Upper Quartile

2 4 6 8 10 12 14

Page 18: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

18

February 06, 2015

Apr 30­7:58 PM

2, 3, 5, 6, 8, 9, 12, 12, 13Median

of entire setGreatestValue

Least Value

Median of lower half Median of upper half

4 12

Lower Quartile Upper Quartile

2 4 6 8 10 12 14

Page 19: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

19

February 06, 2015

Apr 30­7:58 PM

2, 3, 5, 6, 8, 9, 12, 12, 13Median

of entire setGreatestValue

Least Value

Median of lower half Median of upper half

4 12

Lower Quartile Upper Quartile

2 4 6 8 10 12 14

Page 20: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

20

February 06, 2015

Apr 30­7:58 PM

2, 3, 5, 6, 8, 9, 12, 12, 13Median

of entire setGreatestValue

Least Value

Median of lower half Median of upper half

4 12

Lower Quartile Upper Quartile

2 4 6 8 10 12 14

Page 21: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

21

February 06, 2015

Mar 19­10:47 AM

NOTE:  Box­and­whisker plots separate data into four parts.  Even though the parts may differ in length, each part contains 1/4 (25%) of the data.

Page 22: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

22

February 06, 2015

Mar 19­10:56 AM

Page 23: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

23

February 06, 2015

Mar 19­10:58 AM

Page 24: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

24

February 06, 2015

Feb 15­9:58 PM

Label ActivityLabel ActivityLower Quartile

Greatest Value

Upper Quartile

Least Value Median

Page 25: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

25

February 06, 2015

May 21­4:33 PM

0 10 20 30 40 50 60 8070 90 100

1.  What is the median of the data represented in the graph? a)   35          b)  75         c)  65        d)  55     

2.  What is the Upper Quartile? a)   65          b)  70         c)  85        d)  75     

3.  What is the minimum value according to this graph? a)   13          b)  35         c)  17        d)  100     

Quick 

Check

Page 26: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

26

February 06, 2015

Feb 6­7:39 AM

Draw and label a Box and Whisker Plot for each.  

range:  10

median:  16

upper quartile:  19

lower quartile:  12

interquartile range:  7

outliers:  no outliers 

10, 12, 15, 16, 17, 19, 20 Least to greatest:

Page 27: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

27

February 06, 2015

Feb 6­7:42 AM

Draw and label a Box and Whisker Plot for each.  

range:  30

median:  26.5

upper quartile:  28

lower quartile:  23

interquartile range:  7

outliers:  11 and 41

11, 22, 23, 25, 26, 27, 28, 28, 29, 41Least to greatest:

Page 28: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

28

February 06, 2015

Feb 6­7:43 AM

Draw and label a Box and Whisker Plot for each.  

range:  58

median:  47

upper quartile:  52

lower quartile:  39.5

interquartile range:  12.5

outliers:  14 and 72

Least to greatest: 14, 36, 43, 47, 47, 48, 56, 72

Page 29: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

29

February 06, 2015

Feb 6­7:43 AM

Draw and label a Box and Whisker Plot for each.  

range:  26

median:  62

upper quartile:  72.5

lower quartile:  55.5

interquartile range:  17

outliers:  no outliers

51, 54, 57, 59, 62, 64, 72, 73, 77Least to greatest:

Page 30: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

30

February 06, 2015

May 20­5:34 PM

Draw and label a Box and Whisker Plot for each.  

Try these on your own!Try these on your own!

106, 107, 107, 108, 109, 114, 115, 117, 117, 124median:   111.5lower quartile:   107upper quartile:   117least value:   106greatest value:   124outliers:   none

#14 on page 522 

Page 31: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

31

February 06, 2015

Mar 3­11:03 AM

Draw and label a Box and Whisker Plot for each.  #13 on page 522 

median:   90.5lower quartile:   86upper quartile:   92least value:   85greatest value:   95outliers:   72

72, 85, 86, 88, 90, 91, 92, 92, 93, 95

Page 32: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

32

February 06, 2015

Explore

What day were you born on?

____, ____, ____, ____, ____, ____, ____, ____, ____,

____, ____, ____, ____, ____, ____, ____, ____, ____

1.  Create a box and whisker plot from that data above:     Create a number line and draw the box below the number         line.  

2.  Label the upper quartile, lower quartile, median, upper extreme,          lower extreme

3.  Write:  Step by step how you found the quartiles and median  

Enrichment ActivityEnrichment Activity

Page 33: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

33

February 06, 2015

May 1­12:58 PM

Page 34: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

34

February 06, 2015

Feb 6­8:34 AM

Page 35: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

35

February 06, 2015

Feb 6­8:33 AM

Page 36: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

36

February 06, 2015

Feb 6­8:34 AM

Page 37: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

37

February 06, 2015

Apr 30­7:58 PM

2, 3, 5, 6, 8, 9, 12, 12, 13Median

of entire setLeast Value

GreatestValue

Median of lower half Median of upper half

4 12

Lower Quartile Upper Quartile

2 4 6 8 10 12 14

Page 38: Measures of variation Box and whisker plot.notebook Box and Whisker (Box Plots).pdfMeasures of variation Box and whisker plot.notebook 1 February 06, 2015 May 205:22 PM BoxandWhisker

Measures of variation   Box and whisker plot.notebook

38

February 06, 2015

Feb 6­8:32 AM