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

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.

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.

The basic mathematical concepts of standard deviation and variance are useful to investors. Compare variance versus standard deviation and calculate each.

The equation for the standard error of the mean is the sample standard deviation divided by the square root of the sample size.