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