Returns a sample based estimate of the standard deviation of the values in the list, {0}. If {0} is a list of numbers, a ...

Returns a sample based estimate of the standard deviation of the values in the list, {0}. 
    If {0} is a list of numbers, a number is returned.  If {0} is a list of datetime or duration the result is a duration. 
    An exception is thrown on an empty list or a list of items that are not type number, datetime or duration.