1) 컬럼별 결측치 확인 df.isnull().sum() 2) 결측치 비율 확인 df_missing = df_service np.sum(df_missing.isnull()) missing_number = df_missing.isnull().sum().sort_values(ascending=False) missing_percentage = missing_number/len(df_missing) missing_info = pd.concat([missing_number,missing_percentage], axis=1, keys=['missing number','missing percentage']) missing_info.head(50) 3) 그래프로 확인 import missingno as msno imp..
