The interquartile mean is a measure of central tendency. While all values in a data set are used to calculate the mean, only the interquartile range -- the central portion of a data set -- is used ...

Learn about calculating averages from grouped data with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

The term describes how much the numbers if a set of data vary from the mean. The syntax to calculate the Standard Deviation is as follows: =STDEV(sampling range) Where the sampling range ...

1. Mean The mean is calculated by adding up all the values in a data set and dividing this total by the number of values.

How to Calculate a Trimmed Mean in Excel. A trimmed mean is much like a standard mean, which you can derive in Excel using the AVERAGE function. However, instead of using all of the data points to ...