double average;
	double variance;

	Statistics(double[] data) {
		CalcDbl(data);
	}

	Statistics(int[] data) {
		CalcInt(data);
	}

	void CalcDbl(double[] data) {
		double sum = 0;
		double sum2 = 0;

		for (int i=0; i<data.length; i++) {
			sum += data[i];
			sum2 += data[i]*data[i];
		}

		average = sum/data.length;
		variance = sum2/data.length - average*average;
	}

	void CalcInt(int[] data) {
		int sum = 0;
		int sum2 = 0;

		for (int i=0; i<data.length; i++) {
			sum += data[i];
			sum2 += data[i]*data[i];
		}

		average = (double)sum/data.length;
		variance = (double)sum2/data.length - average*average;
	}

	double getAverage() {
		return average;
	}

	double getVariance() {
		return variance;
	}