Twenty words are chosen randomly from a fifth-grade science book, and twenty random words are chosen from a ninth-grade science book. the length of the words chosen are as follows: 5th grade textbook: 2, 4, 3, 6, 5, 5, 3, 7, 8, 4, 4, 1, 5, 2, 4, 1, 1, 4, 5, 3 9th grade textbook: 7, 9, 3, 4, 12, 9, 5, 3, 4, 3, 9, 4, 8, 6, 5, 7, 9, 4, 8, 6 the mean absolute deviation is 1.45 for the fifth-grade text and 2.25 for the ninth-grade text. which conclusion is reasonable from these measures?