Replace Nan values with mean or mode, Quizzes of Computer science

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def fill_missing(df): global PREDICTORS NUMERICAL, PREDICTORS_CATEGORICAL Bae dfr = df.copy() for c in PREDICTORS_NUMERICAL: value = dfr[c].mean() dfr[c].fillna(value , inplace = True) for d in PREDICTORS CATEGORICAL: value = dfr[d].mode().sort_values()[@] dfr[d].fillna(value, inplace = True) return dfr