I think of Y = f(X). f can be anything from tree based model to a neural network to nonparametric model.
Y = Mx + c is simple and common but by no means the only kind of model.
Y = Mx + c is simple and common but by no means the only kind of model.
Technically doing a pair of linest in excel and a goal seek to weight the output of each is Ai.
Sometimes the Groundbreaking Ai startup that just raised a gazillion dollars in their 10th up round, is just a plain old basic high school statistical model.