private boolean rule2(double sample) {
        if (!hasMean()) {
            return false;
        }

        if (sample > mean.getResult()) {
            if (rule2Count > 0) {
                ++rule2Count;
            } else {
                rule2Count = 1;
            }
        } else {
            if (rule2Count < 0) {
                --rule2Count;
            } else {
                rule2Count = -1;
            }
        }

        return Math.abs(rule2Count) >= 9;
    }
private boolean rule2 ( double sample ) { if ( ! hasMean ( ) ) { return false ; } if ( sample > mean . getResult ( ) ) { if ( rule2Count > 0 ) { ++ rule2Count ; } else { rule2Count = 1 ; } } else { if ( rule2Count < 0 ) { -- rule2Count ; } else { rule2Count = - 1 ; } } return Math . abs ( rule2Count ) >= 9 ; }
Nine (or more) points in a row are on the same side of the mean