Today we’re going to make a

Human box and whisker plot!

Step One!•9 students will get in order from shortest to tallest! (smallest to the left)

Step Two!•Which student is our median?

Median

Hmmmm….•Now we’ve

separated the class into 2 halves. The short half and the tall half

Median

Step Three!•We need to find the

students that are quartiles…any guess what that means?

Median

Hmmmm…•Now we’ve found the middle of the short half and the middle of the tall half.

LowerQuartile

UpperQuartile

Median

Hmmmm…•In a box and whisker plot, the quartiles are the edges of our box!

LowerQuartile

UpperQuartile

Median

Step Seven!•Now we need to find

the students that are our endpoints!

LowerQuartile

UpperQuartile

Median

Hmmmm…•Our endpoints are connected with segments to the box just like whiskers!•ALL DONE! •Return to your seats.

LowerQuartile

UpperQuartile

Median

Sooooo…what did we just do?•We make box-and-whisker plots to show data with a visual representation!

Just follow these 5 easy steps!1. Put your data in order (from least to greatest)2. Find the median3. Find the Lower and Upper Quartile4. Find the Endpoints (maximum and minimum)5. Draw!

ORGANIZATION

PART OF THE BOX

PART OF THE BOX

THE WHISKERS

FUN PART

What does it look like?

The amount of rainfall that Idaho received in the last 7 months is shown below in centimeters….

11, 12, 10, 7, 9, 18, 5

1. Put your data in order (from least to greatest)

5, 7, 9, 10, 11, 12, 18

The amount of rainfall that Idaho received in the last 7 months is shown below in centimeters….

11, 12, 10, 7, 9, 18, 5

2. Find the median

5, 7, 9, 10, 11, 12, 18

The amount of rainfall that Idaho received in the last 7 months is shown below in centimeters….

11, 12, 10, 7, 9, 18, 5

3. Find the Lower and Upper Quartile

5, 7, 9, 10, 11, 12, 18

The amount of rainfall that Idaho received in the last 7 months is shown below in centimeters….

11, 12, 10, 7, 9, 18, 5

4. Find the Endpoints (highest and lowest values)

5, 7, 9, 10, 11, 12, 18

The amount of rainfall that Idaho received in the last 7 months is shown below in centimeters….

11, 12, 10, 7, 9, 18, 5

5. Draw!

5, 7, 9, 10, 11, 12, 18

The amount of donuts sold per day since a bakery has opened is shown below,

19 , 13 , 12 , 19 , 9 , 5 , 13 , 18

1. Put your data in order (from least to greatest)

5, 9, 12, 13, 13, 18, 19, 19

The amount of donuts sold per day since a bakery has opened is shown below,

19 , 13 , 12 , 19 , 9 , 5 , 13 , 18

2. Find the median

5, 9, 12, 13, 13, 18, 19, 19

The amount of donuts sold per day since a bakery has opened is shown below,

19 , 13 , 12 , 19 , 9 , 5 , 13 , 18

3. Find the Lower and Upper Quartile

5, 9, 12, 13, 13, 18, 19, 19

The amount of donuts sold per day since a bakery has opened is shown below,

19 , 13 , 12 , 19 , 9 , 5 , 13 , 18

4. Find the Endpoints (highest and lowest values)

5, 9, 12, 13, 13, 18, 19, 19

The amount of donuts sold per day since a bakery has opened is shown below,

19 , 13 , 12 , 19 , 9 , 5 , 13 , 18

4. Find the Endpoints (highest and lowest values)

5, 9, 12, 13, 13, 18, 19, 19

What is the median of this data?

68

What is the maximum of this data?

100

What is the range of this data?

100-17=83

What is the upper quartile of this data?

98

What is the minimum of this data?

78

What percent of data is shown below the lower quartile?

25%

What percent of data is shown above the median?

50%