Lesson 21: Graphing Quartiles and Boxplot


Lesson on locating the quartiles in the list of numbers and constructing boxplots using the numbers. Quartiles are values that divide the list of numbers into quarters. Boxplots are the graphical displays of the quartiles. Arranging the numbers from least to greatest is necessary to find the median and the quartiles. The 1st quartile is the median of the first half of the arranged list, and the 3rd quartiles is the median of the second half.

2:11 List of Barry Bonds' homerun hits during his season

Numberbender lesson module on constructing quartiles and boxplot: 


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