Math Station 3

Box and Whisker Plots

Put the numbers in order from least to greatest

Find the median, the middle number

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Plot this median on a number line

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Using only the first half of the numbers (from the beginning to the median), find the new median of this set of data

Plot this point on the number line, it is the "first quartile" number
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Now using the second half of the numbers, (from the first median to the end), find the new median of this set of data

Plot this point on the number line, it is the "third quartile" number
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Draw a box connecting the first quartile and median (the first two plotted points). Then draw a box connecting the median and the third quartile (the second two plotted points)

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Plot the smallest value and connect it to the box using a line.

Plot the largest value and connect it to the box using a line

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