Xiao pang: (89+96+9 1)÷3
=276÷3,
=92 (points);
Xiaoya: (96+ 100+92)÷3
=288÷3,
=96 (points);
Dingding Jr.: (98+9 1+90)÷3,
=279÷3,
=93 (points);
Small: (97+92+90)÷3,
=279÷3,
=93 (points);
Group average score:
The first time: (89+96+98+97)÷4,
=380÷4,
=95 (points);
Second time: (96+ 100+9 1+92)÷4,
=379÷4,
=94.75 (minutes);
The third time: (9 1+92+90+90)÷4,
=363÷4,
=90.75 minutes.
The average score of Xiaopang Ding clique for the first time was 89 96 98 97 93, and for the third time it was 96 100 9 1 92 95, 9192 90 90 75, with an average score of 92 96 93 93.