Question

The two plots below show the heights of some sixth graders and some seventh graders:Sixth Graders+52 53 54 55 56 57Height (inches)Seventh Graders52 53 54 55 56 57Height (inches)The mean absolute deviation (MAD) for the first set of data is 1.2 and the MAD for the second set of data is 1.0. Approximately how manytimes the variability in the heights of the seventh graders is the variability in the heights of the sixth graders? (Round all values to the tenthsplace.)

Answer 1

From the information given,

MAD for the heights of some sixth graders = 1.2

MAD for the heights of some seventh graders = 1

Number of times = MAD of data1/MAD of data 2 = 1.2/1

The answer is 1.2