Missing Values: Data Types, Missing Flags & Mean, Median and Group Imputation
All lessons
- Missing Values: Data Types, Missing Flags & Mean, Median and Group ImputationFree
- Encoding Categories: One-Hot Dummies, Count Encoding & Ordinal Ranks Pro
- Scaling: Min-Max, z-Score & Robust Scaling with Quartiles Pro
- Binning & Quantile Buckets: Tenure Bands, Income Quartiles & Default Rates (with a Chart) Pro
- Log Transforms & Outlier Capping (Winsorising at the 5th/95th Percentile) Pro
- Ratio & Interaction Features: Loan-to-Income, DTI and LTI × Self-Employed Pro
- Target Encoding with Smoothing & Why Leakage Happens (Train/Test Split) Pro
- Feature Importance Screen: Correlation with the Target & a Univariate AUC (with a Chart) Pro
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