In a box plot, it is easy to see the range of where 50% of your data lies. Let’s examine this a little further by describing the interquartile range. Quartiles can be defined as dividing your ...

To find these from the graph we draw two lines ... You are allowed to be out by a little but be as accurate as you can. So the interquartile range is the difference between the upper quartile ...

2.5 kg, 3.1 kg, 3.4 kg, 3.5 kg, 3.5 kg, 4 kg, 4.1 kg Find the interquartile range of the weights of the babies. To find the median value, or the value that is half way along the list, the method ...