数据框如图所示
Name Job Salary
john painter 40000
peter engineer 50000
sam plumber 30000
john doctor 500000
john driver 20000
sam carpenter 10000
peter scientist 100000
如何按“名称”列进行分组并对每个组的“薪水”列应用标准化？
预期结果：
Name Job Salary
john painter 0.041666
peter engineer 0
sam plumber 1
john doctor 1
john driver 0
sam carpenter 0
peter scientist 1
我尝试过以下方法
data = df.groupby('Name').transform(lambda x: (x - x.min()) / x.max()- x.min())
然而，这会产生
Salary
0 -19999.960000
1 -50000.000000
2 -9999.333333
3 -19999.040000
4 -20000.000000
5 -10000.000000
6 -49999.500000