Data Warehousing and Data Mining20815 marksNeed for data preprocessing
Why is data preprocessing required? Explain any two data preprocessing methods.
Why is data preprocessing required? Explain any two data preprocessing methods. [5]
Data preprocessing is essential because: 1. Raw data quality issues: Real-world data contains inconsistencies, missing values, duplicates, and noise that can negatively impact model performance and accuracy. 2. Improved model performance: Cleaning and transforming data into a suitable format ensu...