The interquartile range (IQR) is a statistical measure of the middle values of a sample data set that is separated into four equal parts. This middle-value grouping can provide a median range between ...

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 range ...

Earlier this year, this column explored two ways to describe data dispersion: trimmed means and weighted averages. Those two are siblings in a large family. Others members of the family include the ...

The range of a set of numbers is the largest value, subtract the smallest value. \(range = largest~number - smallest~number\) The mass of 7 babies are as follows: 2.5 kg, 3.1 kg, 3.4 kg, 3.5 kg, 3.5 ...