Let’s examine this a little further by describing the interquartile range. Quartiles can be defined as dividing your data into 4 parts or quarters of approximately equal size. You can define the ...

The interquartile range (IQR) is therefore 18 - 4 = 14. You will notice that the fact there ... so the UQ is the 30th number. To find these from the graph we draw two lines across from the ...

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 ...