What are decision trees?

A decision tree is like a recipe that helps you choose what to do next based on simple questions.

Imagine you're trying to decide whether to take an umbrella with you when you leave home. You ask yourself, “Is it raining outside?” If yes, you take the umbrella. If no, you don’t. That’s a decision tree in action, it helps you make choices by asking one question at a time.

A decision tree starts with a big question (like “Is it raining?”), and each answer leads to another smaller question or a final choice. You follow the path that matches your answers, just like following steps in a game.

For example:

• If it’s raining → take an umbrella.
• If it’s not raining → leave the umbrella at home.

You can think of a decision tree as a map with different paths, each path helps you reach the best choice based on what you know. It's like choosing between ice cream or cake by asking, “Do you want something sweet?” Then, if yes, you pick one of them. If no, you might choose fruit instead.

It’s simple, fun, and works just like a game!