+Preprocessing is the essential first step in preparing raw data for analysis or [Machine Learning](/wiki/machine_learning). It involves cleaning, transforming, and organizing information to ensure quality and optimize performance for subsequent processes, such as [Data Analysis](/wiki/data_analysis). This vital stage shapes raw input into a usable form, paving the way for accurate insights.
+## See also
+- [Data Cleaning](/wiki/data_cleaning)
+- [Feature Engineering](/wiki/feature_engineering)
+- [Data Transformation](/wiki/data_transformation)