0
name;surname;street;profession;sex;age;city
name1;surname1;street1;prof1;male;22;city1
name2;surname2;street2;prof2;male;25;city2
name1;surname1;street1;prof1;male;23;city3
的数据存储在* .csv文件,目标是数平均年龄为各个行业。因此,预期输出是:
avg of prof1 = 22,5
avg of prof2 = 25