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Today’s Lesson

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- Today we will learn about a new type of graph.
- It is called a whisker box

- Box and whisker plots
- A box and whisker plot is used to display information about the range, the median and the quartiles. It is usually drawn alongside a number line

FIVE POINT SUMMARY More detailed than reporting only median, but less detailed than showing a histogram or stem & leaf diagram, is the FIVE NUMBER SUMMARY

- Example
- The oldest person in Mathsminster is 90. The youngest person is 15.
- The median age of the residents is 44, the lower quartile is 25, and the upper quartile is 67.
- Represent this information with a box-and-whisker plot.
- Solution

- You have three post-its
- Write your name on each
- Use one to records your
- Height
- Age in Months
- Shoe Size

- Now that we have our data we are going to create a human whisker box.
- Lets use our height data first!
- Line up in order from least to greatest.
- Lets find the Median
- Now separate the Upper and Lower halves of the data
- Let’s find the middle of the lower half.
- This is the lower quartile

- This is the upper quartile

- Now that we have our data we are going to create a human whisker box.
- Lets use our ages in month next !
- Line up in order from least to greatest.
- Lets find the Median
- Now separate the Upper and Lower halves of the data
- Let’s find the middle of the lower half.
- This is the lower quartile

- This is the upper quartile

- C- Voice Level 1
- H- Do your best thinking. Raise hand for assistance
- A- Use the Shoe size data create a Box and Whisker Plot of the data
- M- You may choose a seat with your partner
- P- Complete the Box and Whisker plot of data. When you are down turn in paper to finished work basket. Complete practice problems in textbook. P. 82

- Pre Algebra Upgrade

- C- Voice Level 1 Talk about Math
- H- Do your best thinking. Raise your hand for assistance
- A- Complete Study Guide Questions
- M – You may choose a seat
- P- Complete Front side. Compare your answers with your partner or group.
- If you are finished work on Chapter 2 Vocabulary Review

- What did I do today in math?
- What did I learn today in math?

- Classwork/ Current Work Warm Ups
- Graded Work
- Graded test
- Completed HW

- Vocabulary Foldables

- Honeycutt, N. (2007) Human Whisker Box Plot Retrieved November 19, 2011 from http://www.learnnc.org/lp/pages/3767?style=print.