"班级"	"不及格科目数"	"学生人数"
"1班"	5	6
"3班"	5	7
"4班"	2	6
"1班"	1	3
"2班"	1	8
"3班"	1	10
"1班"	2	2
"2班"	4	8
"3班"	4	9
"4班"	1	10
"2班"	3	6