Databricks Certified Machine Learning - Associate
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Consider a dataset with a numerical feature 'Age' having missing values. Write a code snippet to perform median imputation on this feature using Python and the scikit-learn library. Explain how this process handles missing values.
A
from sklearn.impute import SimpleImputer imputer = SimpleImputer(strategy='median') imputer.fit(df[['Age']]) df['Age'] = imputer.transform(df[['Age']])
B
from sklearn.impute import SimpleImputer imputer = SimpleImputer(strategy='mean') imputer.fit(df[['Age']]) df['Age'] = imputer.transform(df[['Age']])
C
from sklearn.impute import SimpleImputer imputer = SimpleImputer(strategy='mode') imputer.fit(df[['Age']]) df['Age'] = imputer.transform(df[['Age']])
D
from sklearn.impute import SimpleImputer imputer = SimpleImputer(strategy='constant', fill_value=0) imputer.fit(df[['Age']]) df['Age'] = imputer.transform(df[['Age']])_