"班级"	"不及格科目数"	"学生人数"
"1班"	4	8
"2班"	4	5
"4班"	1	10
"1班"	5	6
"2班"	3	4
"3班"	2	3
"4班"	3	8
"1班"	2	10
"2班"	1	1
"3班"	1	8
"2班"	5	4
"3班"	3	4