Learn how to calculate the interquartile range from a variety of different data types and draw and interpret box-and-whisker diagrams.

GCSE AQA Analysing data - AQA Range In statistics there are three types of average: the mean, the median and the mode. Measures of spread such as the range and the interquartile range can be used ...

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 ...