Box Plots Notes © copyright 2014 – all rights reserved www.cpalms.org.

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Presentation transcript:

Box Plots Notes © copyright 2014 – all rights reserved

Learning Objectives Students will be able to: 1) Construct a box plot given a set of data. 2) Describe the elements within a box plot. 3) Analyze and interpret a box plot including The meaning of upper and lower quartile. Explain the meaning of the median. The meaning of upper and lower extremes. Identifying if there are any outliers.

What you should already know!!! How to list numbers from least to greatest. How to draw an evenly portioned number line that is appropriate to the given data set. How to accurately create a dot plot. How to calculate the range of the data. How to find of mean and median.

Example Ms. Alexander was on the track team in high school. The following numbers represent the time(in minutes) it took her to complete the 200 meter dash race at each competition. 1.96, 3.89, 4.76, 1.83, 2.11, 2.09, 1.74

1)Organize the data from least to greatest. 2) Find the median of the data set. 3) Identify the lower and upper extremes. 4) Identify the lower and upper quartile.

5) Calculate the interquartile range. 6) Determine if there are any outliers. 7) Construct the box plot. 8) What is the shortest time Ms. Alexander ran? 9) What percent of the data is greater than the median? 10) What percent of the data is contained in the lower quartile?

Let’s Practice Record the length of time it takes you to get ready in the morning before school.

1)Organize the data from least to greatest. 2) Find the median of the data set. 3) Identify the lower and upper extremes. 4) Identify the lower and upper quartile.

5) Calculate the interquartile range. 6) Determine if there are any outliers. 7) Construct the box plot. 8) What is the fastest time someone takes to get ready? 9) What percent of the data falls in the lower quartile? 10) How many people take less than an hour to get ready? What percent of the sample is it?