grup berdasarkan kuintil panda
df = pd.DataFrame(np.arange(10), columns=['value'])
df['quintile'] = pd.qcut(df['value'], 5, labels=False)
df
value quintile
1 1 0
2 2 1
3 3 1
4 4 2
5 5 2
6 6 3
7 7 3
8 8 4
9 9 4
10 10 5
Louisa Renner