An article posted by AdAge Media News on June 18, 2012 revealed that “a study commissioned by the Online Publishers Association found that 54 percent of tablet users prefer free, ad-supported apps over paid ones, up from 40 percent a year ago. At the same time, just 19 percent of users say they prefer to pay more for apps with no ads, down from 30 percent last year.”
a Which charting methods offer an accurate reflection of the data?
b Which provides the most meaning? Why?