X Bar Symbol
The x bar symbol is used in statistics to represent the sample mean of a distribution.
Symbol  Format  Data 

x̄  Unicode 

TeX 


SVG 
Usage
Arithmetic Mean  Formula
The arithmetic mean, also called the sample mean, is the average of a sample space. To calculate the arithmetic mean sum all the data points in a sample space and then divide by the number of elements.
Sample Standard Deviation  Formula
The sample standard deviation formula is denoted by the greek lower case sigma symbol in the case of the population and the latin letter s for the sample.