Box-Whiskers Plot

Box-Whiskers Plot

Learning Objectives:

Understand and Apply Box and Whiskers Plot

Box and Whiskers Plot

Box Plot:

For visualizing data, there is a Graphical Representation of a 5-number summary called a Box Plot, or Box and Whisker Graph.

Creating a Box Plot:

To create a Box Plot, a number line is first drawn. A box is drawn from the first quartile to the third quartile, and a line is drawn through the box at the Median. “Whiskers” are extended out to the minimum and maximum values.

While quartiles are not a 1-number summary of variation like Standard Deviation, the quartiles are used with the Median, Minimum, and Maximum values to form a 5 number summary of the data.

Five number summary:

The five number summary takes this form:

Minimum, Q1, Median, Q3, Maximum



Hook questions:

1. What is Box and Whisker Graph?

2.  How do we create a Box Plot?


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