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