The ages of two groups of dance students are shown in the following dot plots: Group X Group Y + 8 12 16 20 24 Age (years) The mean absolute deviation (MAD) for group X is 3.07 and the MAD for group Y is 5.25. Which of the following observations can be made using these data? O Group X has less variability in the data. O Group X has greater variability in the data. O Group Y has a lower range. O Group Y has a lower mean