The median is (90+92)÷2.
= 182÷2,
=9 1;
Xiao Ming's average score is (87+89+90+90+92+92+94) ÷ 8,
=726÷8,
=90.75;
A: The median of this group is 9 1, and Xiaoming's average score is 90.75.
So the answer is: 9 1 90.75.