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 ...

It is difficult to calculate these values manually and while calculators make it easier, Excel is the preferred tool for finding these values over a range of cells.

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Learn how to calculate the net present value (NPV) of your investment projects using Excel's XNPV function.

Learn about calculating the mean, mode and range from a frequency table with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

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 ...