Forecasting refers to the process of making predictions or estimations about future events, based on available data and analysis. It involves using various statistical methods and models to analyze historical trends and patterns in order to make informed guesses about what might happen in the future. Forecasting is commonly used in fields such as economics, weather prediction, sales projections, and financial planning, among others. The accuracy of a forecast depends on several factors including the quality of data input, the sophistication of the model used, and the level of uncertainty involved in making predictions about future events.