(2) Estimated average score = 95× 0.1+105× 0.15× 0.15+125× 0.3+.

(3) According to the figure, the abscissa of the midpoint of the tallest small rectangle is 125, so the mode is 125.

The area of the highest small rectangle is 0.3, the sum of the left group area is 0.4, and the sum of the right group area is 0.3.

So the median is120+13x10 ≈123.33.