Constant addition in stats model.
In stats model, why do we add a constant? What will happen when we don’t add constant to the stats model?
To draw a line both intercept and slope are required as per line of the equation. B0 represents the intercept which is required. Without b0 and b1 we can’t draw a line only, then we will not be able to draw a regression line. Hence we will not know how points fit the regression line.