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