Predictive analytics can be very simple. We introduce a very simple example of a predictive model in the context of binary classification based on a simple threshold.
Imagine that a truck transporting small oranges and large grapefruits runs off the road; all the boxes of fruits open up, and all the fruits end up mixed together. Equipped with a simple weighing scale and a way to roll the fruits out of the truck, you want to be able to separate them automatically based on their weights. You have some information on the average weights of small oranges (96g) and large grapefruits (166g).