the data list shows the cost, in dollars, of different brands of sneakers at a shoe store. 44.99, 59.99, 32.30, 65.00, 52.59

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.

I’m still confused on how to work the percentages

I’m really confused and need your assist me with this question i’ve never been taught