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

How to calculate Standard Deviation in Excel The Standard Deviation is a term used in statistics. The term describes how much the numbers if a set of data vary from the mean.

Data Required for T-Value You can calculate the T-Value in Excel with the mean, standard deviation and degrees of freedom.

Determination There are several practical ways to calculate the mean and standard deviation. Scientific calculators typically come with a built-in program for both the mean and standard deviation.

Learn the difference between the standard error of the mean and the standard deviation and how each is used in statistics and finance.