"班级"	"不及格科目数"	"学生人数"
"1班"	2	3
"2班"	2	8
"3班"	1	10
"4班"	2	3
"1班"	4	5
"2班"	4	5
"3班"	3	10
"4班"	1	3
"2班"	5	1
"2班"	3	9
"3班"	5	7
"4班"	4	7