The two plots below show the heights of some sixth graders and some seventh graders of a school: /users/tylerleaird/desktop/screen shot 2017-04-25 at 10.53.09 am. png. the mean absolute deviation (mad) for the first set of data is 1.2 and the mad for the second set of data is 0.7. approximately how many times the variability in the heights of the seventh graders is the variability in the heights of the sixth graders? (round all values to the tenths place.)

0.5
1.2
1.7
3.4