Regression

Regression is a statistical technique that models relationships between input variables and continuous outcomes. Unlike classification, regression predicts numeric values, which is essential for forecasting and trend analysis.

Example: Think of regression as drawing a line of best fit through scattered data points. For example, a housing price model might show that each extra square foot adds about $150 to the price. Methods range from simple linear regression to non-linear models like polynomial regression. These techniques form the foundation for predictive systems in finance, healthcare, and environmental science.