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