The interquartile mean is a measure of central tendency. While all values in a data set are used to calculate the mean, only the interquartile range -- the central portion of a data set -- is used to ...

The interquartile range is another measure of spread, except that it has the added advantage of not being affected by large outlying values. In order to calculate this value we must first understand ...

The range of a set of numbers is the largest value, subtract the smallest value. \(range = largest~number - smallest~number\) 7 babies are weighed and weigh the following amounts: 2.5 kg, 3.1 kg, 3.4 ...