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

Scientific calculators typically come with a built-in program for both the mean and standard deviation. These can also be determined by functions in spreadsheet programs such as Excel.

The standard deviation is a formal measure of the tendency of the numbers in your list to vary – or deviate – from the mean. You can think of it as a measure of how "spread out" your numbers are.

Standard deviation is a widely used metric to ascertain the investment risk of mutual funds. The concept of Standard Deviation becomes important when you invest in a market-linked product like mutual ...

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.