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Handling Missing Values

Lesson 2: Handling Missing Values

Handling missing values is a crucial part of data cleaning. Missing values can cause errors in calculations or misleading trends if ignored.

In this project, instead of deleting rows with missing data, meaningful placeholder values are used. This approach preserves the full dataset while clearly marking unknown information.

  • Data Preservation: Keeps all sales records intact without dropping rows.
  • Meaningful Defaults: Uses clear placeholders like “Unknown” or “Not Assigned.”
  • Smooth Data Processing: Prevents issues during aggregation and visualization.

This method ensures the dataset remains complete and analysis-ready.