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 ...

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 ...