The document discusses the importance of predictive analysis for organizations. It recommends that companies measure customer lifetime value to understand how much customers will spend over time. Analytical models can be used to predict what customers are likely to purchase next through digital marketing. Quantitative analysis involves making assumptions about data, statistics, and other factors. Key factors that influence sales include customer purchase history, product attributes, and customer demographics. Regression analysis is useful for determining which correlated variables influence sales of particular products. Managers must ensure predictive models remain valid by updating assumptions over time to avoid outdated insights.