Joint probability distribution

Joint probability distribution is a way to describe how two things are related. It is like a graph that shows the likelihood that two things will happen together. In the graph, each possible combination of the two things is put into a box, and the size of the box shows how likely it is for both things to happen together. For example, you could look at a joint probability distribution for the weather and what type of clothes people are wearing. If it was sunny, the box for people wearing t-shirts would be much bigger than the box for people wearing winter coats. This shows that people are more likely to wear t-shirts when it's sunny than winter coats.