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 ...

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

Formula of Mean: Know to How to Calculate Median for Grouped, Ungrouped data along with solved examples, questions with solution.

In National 4 Lifeskills Maths use statistics to analyse and compare data sets using mean, median, range, inter-quartile range, and standard deviation.

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 ...