Simple Linear Regression Code with Simple GUI Support

Users can input data points through mouse click on simple GUI. Simple Linear Regression is done.

In this code, simple linear regression is used (y = ax + b). This code includes simple GUI. The aim of the code is to support the beginners (who deals with regression) with the interactive GUI. On GUI, users are defining the scale range of x and y axes. After the determination of the scales, they can freely mark input points through the mouse selection. When the selections is completed "right click", they can produce Simple Linear Regression Line fit model for their input data.