Definition: An action of regressing, a return to a previous state.

Alright class, settle down now, let’s take a look, At ‘regression,’ a concept we must cook! The dictionary gives you a helpful clue, "An action of regressing," it's perfectly true. Now "regress" itself means to go back in time, To a simpler state, a more familiar rhyme. Think of a ball rolling downhill with glee, It’s losing speed and moving back, you see? That's regression – a decrease, a slow decline, Moving backwards from where it did shine. We often use it in statistics too, To predict what will happen, for me and for you! Like if we track sales, year after year, Regression helps us understand the fear… (Not really fear, but a tendency to change!) It shows how variables rearrange. So, in short class, regression means: A movement or decrease back towards an earlier state or level. Does that make sense? Do you have any questions about it before we move on?