Target uses predictive analysis to track its users' buying habits. The algorithm is so precise that it predicts the situation on any of its customers at any given time with great accuracy. It knows how many people are there in your family, whether you are a bachelor or if you partied last night. It accurately predicts the pregnancy of its customers based on their buying habits. Andrew Pole, a statistician, created the pregnancy prediction algorithm which generated billions of dollars of revenue for Target.