BET: Microsoft Excel Functions

Estimates standard deviation based on a sample.

	number1	The first number.
	number2	The second optional number.

REMARKS

		The standard deviation is a measure of how widely values are dispersed from the average value (the mean).
		Text and logical values such as True and False are ignored.
		You can have a maximum of 30 arguments.
		If you do not want to count any arguments that are text or logical values you can use the STDEVA() function.
		The accuracy of this function was improved in Excel 2003. For more information please refer to this Knowledge Base Article (826349).

EXAMPLES

	A
1	=STDEV(10,20,30,40) = 12.910