Worth 30 points
the ages of two groups of dance students are shown in the following dot plots:

a dot plot shows age in years on the horizontal axis. for group x, there are 3 dots on 4, 1 dot on 5, 5 dots on 8, 2 dots on 10, 3 dots on 12, and 2 dots on 16. for group y, there are 2 dots on 5, 3 dots on 7, 1 dot on 9, 3 dots on 11, 1 dot on 13, 2 dots on 14, 1 dot on 15, 1 dot on 18, 3 dots on 20, 1 dot on 22, and 2 dots on 24.

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?

group x has less variability in the data.
group x has greater variability in the data.
group y has a lower range.
group y has a lower mean.