Correlation - GCSE Maths Definition

Correlation is a term used in statistics to describe how two things or sets of data relate to each other. When we talk about correlation, we are looking at whether changes in one thing are linked to changes in another. For example, if one thing increases while the other thing also increases, we say there is a positive correlation. If one increases while the other decreases, that's a negative correlation. Sometimes, there might be no pattern at all, which means there is no correlation. Understanding correlation can help us make predictions or understand how different factors might be connected.