Definition
The process of cleaning and transforming raw data into a format suitable for analysis.
Detailed Explanation
Data preprocessing encompasses various techniques to prepare raw data for analysis including cleaning handling missing values outliers transformation normalization standardization encoding handling categorical variables and feature scaling. It's crucial for ensuring data quality and improving model performance.
Use Cases
1. Clinical trials data preparation 2. Customer survey data cleaning 3. Sensor data normalization 4. Text data standardization
