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.

What do we mean by the Least Squares Method?

Regression - Least Squares Method for y on x | ExamSolutions maths videos - youtube Video
Regression for y on x on a Casio Classwiz calculator | ExamSolutions maths videos - youtube Video

Calculating a regression line without the calculator statistics function

Linear Regression for y on x - Least squares method using Sxy and Sxx | ExamSolutions - youtube Video