import pandas as pd[br][/br]df=pd.DataFrame({"Key":['c','b','c','a','b','b','a','c','a'],"Data":[2,4,6,8,10,1,14,16,18]})[br][/br]group=df.groupby(by="Key").mean()其中a,b,c的平均值分别为多少。注意：本题为单选题 A: 5；8；13.333 B: 13.333；5；8 C: 13.333；5；6 D: 13.333；6；8
import pandas as pd[br][/br]df=pd.DataFrame({"Key":['c','b','c','a','b','b','a','c','a'],"Data":[2,4,6,8,10,1,14,16,18]})[br][/br]group=df.groupby(by="Key").mean()其中a,b,c的平均值分别为多少。注意：本题为单选题 A: 5；8；13.333 B: 13.333；5；8 C: 13.333；5；6 D: 13.333；6；8
1