Shantel and Syrus are researching what types of novels people prefer. They decide to survey people at the mall. Shantel asks every sixth person at the entrance. She finds that 24% prefer romance novels. Syrus asks every person in only one store. He finds that 48% prefer romance novels. Whose inference do you agree with? Explain. What mistake might the incorrect friend have made?

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.