extract mean value of the sample . concode_field_sep short windowSize concode_elem_sep double accum concode_elem_sep ArrayList<Double> window concode_elem_sep int oldest concode_field_sep void clear concode_elem_sep double update concode_elem_sep String toString concode_elem_sep void main concode_elem_sep double stdev
double function ( ) { if ( window . size ( ) > 0 ) return accum / window . size ( ) ; else return 0 ; }