I show you the least squares method, what it is and how to calculate a line of regression for y on x on a Casio Classwiz calculator and an earlier video when this function was not available to use or use in exams was not allowed.

I show you the least squares method, what it is and how to calculate a line of regression for y on x on a Casio Classwiz calculator and an earlier video when this function was not available to use or use in exams was not allowed.