In National 5 Lifeskills Maths standard deviation is a measure of consistency or spread of data. It is used as a comparison between different data sets.

Discover what a log-normal distribution is, its financial applications, and how to calculate it, including using Excel for ...

Excel and Google Sheets have three functions to calculate the internal rate of return: IRR, XIRR, and MIRR. Learn how these functions can calculate investment returns.