Study the regression problem with this tool. Linear Regression help you analyze the regression problem, most specifically the relationship between the data points and the error surface.
On one hand you can learn how to represent a line in two different spaces ({x,y} and {k,d}), and on the other hand you see that solving the regression problem is nothing else than finding the minimum in the error surface.
Linear regression can be look at as an optimization problem: if the regression line is displayed in the space spanned by the parameters of the equation of the regression line, we can easily find the solution.

The license of this software is Freeware, you can free download and free use this calculator software.