"班级"	"不及格科目数"	"学生人数"
"1班"	5	8
"2班"	5	6
"3班"	2	3
"4班"	5	8
"2班"	4	10
"3班"	3	1
"4班"	1	6
"1班"	4	4
"3班"	5	1
"4班"	3	2
"1班"	2	9