In a box plot, it is easy to see the range of where 50% of your data lies. Let’s examine this a little further by describing the interquartile range. Quartiles can be defined as dividing your ...

The interquartile range shows the range in values of the central 50% of the data. To find the interquartile range, subtract the value of the lower quartile (\(\frac{1}{4}\) or 25%) from the value ...

To find these from the graph we ... You are allowed to be out by a little but be as accurate as you can. So the interquartile range is the difference between the upper quartile and lower quartile.