Construct a group frequency distribution for the following data: 18, 22, 15, 12, 18, 22, 22, 24, 21, 19, 13, 13, 17, 18, 20, 12, 11, 18, 17, 25, 28, 18, 28, 26, 30, 30, 21, 16, 19, 28, 14, 26, 17, 16, 10, 25, 13, 19, 23, 14, 28, 15, 20, 27, 27, 16, 23, 18, 14, 11, 11, 13, 16, 18, 20, 17, 14, 13, 18, 10 i need only these answer pls