Here again are the results of a survey that students conducted at a mall. the students conducted this survey as part of a statistics project to determine if younger adults are more likely to have tattoos. at least one tattoo no tattoo row totals age 18 - 29 170 320 490 age 30 - 50 60 445 505 column totals 230 765 995 which proportions are most useful in analyzing the relationship between age and tattoos? 170 / 230 and 60 / 230 170 / 490 and 445 / 505 170 / 230 and 320 / 765 170 / 490 and 60 /505