@Test public void testMean() { int values[] = new int[] {33, 16, 9, 7, 5, 9, 16, 14, 421}; float mean1 = 0; float mean2 = 0; // simple for (int value : values) { mean1 += value; } mean1 /= values.length; // online for (int i = 0; i < values.length; i++) { mean2 = AgUtils.calcMeanValue(mean2, i, values[i]); } System.out.println(mean1); System.out.println(mean2); }