Before sending track and field athletes to the olympics, the u. s. holds a qualifying meet. the lower dot plot shows the times (in seconds) of the 888 sprinters who competed in the final of the women's 100100100-meter dash at the 201220122012 olympic games. the upper dot plot shows the times (in seconds) of the top 888 sprinters at the u. s. qualifying meet for that event. the first and the 3rd one i think