=74,"良",IF(K2>=60">
漫游猫认证
1、求和:=SUM(K2:K56) ——对K2到K56这一区域进行求和;
2、平均数:=AVERAGE(K2:K56) ——对K2 K56这一区域求平均数;
4、等级:=IF(K2>
=85,"优",IF(K2>
=74,"良",IF(K2>
=60,"及格","不及格")))