×34×17× ×12 ×+
2023× ×+ ×99+
= = = =
x=
=
90,88,100,96,83,92,94,80,99,80,74,87,95,62,70
成绩/分
100
90﹣99
80﹣89
70﹣79
60﹣69
人数
1
6
5
2