What age groups use social networking sites? A recent study produced the following data about 768 individuals who were asked their age and which of three social networking sites they used most often. (People who did not use such sites were excluded from the study). Age Group (Years) Web site 0 24 25 44 45 64 Over 65 Totals Facebook 77 105 114 12 308 Twitter 46 l 10 81 7' 244 Linkedln 15 9 216 Totals 138 312 290 28 768