Discover what quartiles are in statistics, how to calculate them, and see examples to help you interpret data more ...

The interquartile range shows the range in values of the central 50% of the data. To find the interquartile range, subtract the value of the lower quartile Q1 from the value of the upper quartile ...

In the current 32nd week, the difference between supply and demand of LNG fell below the median, almost to the lower interquartile range.

A high value for the interquartile range shows that the data is spread out. A low value for the interquartile range means the data is closer together or more consistent.

We discourage the use of a diagnostic for normality: the interquartile range divided by the standard deviation. This statistic has been suggested in several introductory statistics books as a method ...

Others members of the family include the inter-quartile range, the mode and the range. Those three I explain here and in a later column I will turn to standard deviations.