Now we will start with some basic modeling with linear regression. Traditional linear regression is the first, and therefore, probably the most fundamental model—a straight line through data.
Intuitively, it is familiar to a lot of the population: a change in one input variable proportionally changes the output variable. It is important that many people will have seen it in school, or in a newspaper data graphic, or in a presentation at work, and so on, as it will be easy for you to explain to colleagues and investors.
