The final step in choosing variables for sales forecasting is to choose your forecasting method and model, or the approach and technique that you will use to analyze your data and generate your predictions. There are different types of forecasting methods and models, such as qualitative, quantitative, historical, predictive, and prescriptive. You should choose the one that best suits your data availability, accuracy, complexity, and purpose. For example, you may use a qualitative method if you have limited or unreliable data, and rely on expert opinions, surveys, or focus groups to forecast your sales. You may use a quantitative method if you have sufficient and reliable data, and use statistical or mathematical formulas, such as regression analysis, time series analysis, or machine learning, to forecast your sales.
Choosing variables for sales forecasting is not a one-size-fits-all process, but a strategic and iterative one that requires careful planning, analysis, and evaluation. By following these steps, you can select the variables that will help you create a realistic, reliable, and actionable sales forecast that will support your sales operation and growth.