What is the M. A.D. of this data set? 3,6,6,7,8,11,15,16

Arandom sample of 150 high school students were asked whether they have a job. the results are shown in the table. have a job do not have a job male 48 35 female 41 26 select a ord or phrase from the drop-down menus to correctly complete the statements describing the association.

Me. i can't figure out this question. give an explanation too. .

Which is f(5) for the function –2x2 + 2x - 3?