Excel Function : STDEV
Estimates standard deviation based on a sample
Microsoft Excel Reference Page
Syntax and Description of the STDEV Excel Function
STDEV is an Excel function that returns the standard deviation of a population based on a sample of the population. The syntax of the function is: STDEV(number1, [number2], ...) where number1, number2, ... are the numbers for which you want to calculate the standard deviation.
About STDEV Excel Function
The STDEV function in Excel calculates the standard deviation of a given set of data. The standard deviation is a measure of how spread out the data is. A low standard deviation means that the data is very close to the mean, while a high standard deviation means that the data is more spread out.