(1) The number of people who participate in ball games is: 8+2= 10 (person).
There are 4+5=9 (people) who take part in painting.
Those who participated in the music were: 6+9= 15 (people).
3+ 10= 13 (people) participated in the dance.
The number of people attending music is the largest.
(2) According to statistics, girls like ball games the least and dance the most; Boys like dancing the least and ball games the most.