An Industry Example of the Interquartile Range John collected some data on invoice processing time. He wanted to know what range of values would tell him where 50% of his processing times fell.

Quartiles are the values that divide a data set into quarters: Put the values in order Divide the list into four equal parts The Quartiles are at the divisions The interquartile range shows the ...

Save guides, add subjects and pick up where you left off with your BBC account. The interquartile range is another measure of spread, except that it has the added advantage of not being affected ...