Statistics How To» Blog Archive » How to find an interquartile range on a boxplot

Q3 is approximately 12 in this graph.

Step 3: Subtract the number you found in step 1 from the number you found in step 3.

This will give you the interquartile range. 12 – 2.5 = 9.5.

via Statistics How To» Blog Archive » How to find an interquartile range on a boxplot.

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