Forecasting is an essential managerial activity that involves estimating future events, conditions, demand, sales, costs, or other business variables on the basis of past and present information. In quantitative analysis and managerial application, forecasting provides a systematic basis for planning and decision-making under uncertainty. Since business conditions are continuously affected by changes in technology, consumer preferences, competition, government policies, and economic conditions, managers cannot depend only on past experience. Forecasting helps them anticipate future developments and prepare suitable strategies. Forecasting is important in business planning because it provides a foundation for determining organisational objectives and allocating resources. Sales forecasts help firms estimate future demand and plan production accordingly. Production forecasts assist in deciding the required quantity of raw materials, labour, machinery, and inventory. Financial forecasts help management estimate revenues, expenses, cash requirements, and investment needs. Forecasting also supports manpower planning by indicating future requirements