Essential Questions Why is it important to include all data even when the data set has repeating values? What does the median of a box plot tell us about.

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Presentation transcript:

Essential Questions Why is it important to include all data even when the data set has repeating values? What does the median of a box plot tell us about the rest of the data How can you use quartiles to describe the data?

WARM UP How many times per day do you brush your teeth? 1. Create a box plot of the following responses. 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 5 2. How did you determine the median? Q1? Q3? toothpaste-by-gerald_g-8253

SWISH AND SPIT Box Plot Lesson 6FD1B11B1204/3243/rinseandspit.gif

Mr. Swish, owner of the Swish and Spit Mouthwash Company had assigned his research team to design a new single use mouthwash container for travelers to pack in their suit cases.

Mr. Swish has asked his product research team to measure the lengths of the mouths of 20 random people from corner to corner to determine how wide to make the opening of the single serve containers. If the container is wider than a person’s mouth, the mouthwash will spill and be wasted htm

Lip Length Data in Millimeters How do we find the median of this data set? What is the minimum value? Maximum value?

Order the “Lip Length” data in the workspace of your worksheet. 42,44,45,46,47,47,47,48,48,48,50,50,52,55,55,60,60,62,62,65 1. Why is it important to include all data even when the data set has repeating values?

Lip Lengths in millimeters Mark the median on the data set. 42,44,45,46,47,47,47,48,48,48,50,50,52,55,55,60,60,62,62,65 1. What is the numerical value of the median? How do you know? 2. By marking the median, what do we know about the rest of the data in the data set?

Lip Lengths in Millimeters Determine and mark the median of the lower half of the data and repeat for the upper half of the data on your worksheet. 42,44,45,46,47,47,47,48,48,48,50,50,52,55,55,60,60,62,62,65 Your data is now divided into how many parts? What are these parts called? How do we find the measure of Q3?

Using the data on your Spit and Swish worksheet, create your box plot and label the quartiles using Q1, Median, and Q3. Label the minimum and maximum values htm

Q1 Median Q3 Minimum Maximum Lip Lengths in Millimeters

How can you use quartiles to describe the data? In the context of the data, what information does the range give? Q1 MedianQ3 Minimum Maximum

Spit and Swish Report Discuss with your partner questions 1-4 on the Spit and Swish worksheet. Fill in the answers, and turn in your worksheet. Make sure the entire paper is completed and all partner names are at the top. cancer-which-is.html

Essential Questions Why is it important to include all data even when the data set has repeating values? What does the median of a box plot tell us about the rest of the data How can you use quartiles to describe the data?