ABSTRACT
When studying linear regression, we attempted to estimate a population regression equation https://www.w3.org/1998/Math/MathML"> μ y 1 x 1 , x 2 , . . . . , x q = α + β 1 x 1 + β 2 x 2 + . . . . . + β q x q $$ \mu _{{y1x_{1} ,x_{2} ,....,x_{q} }} = \alpha + \beta _{1} x_{1} + \beta _{2} x_{2} + ..... + \beta _{q} x_{q} $$ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780429489624/3356e2ed-5dc1-4457-a0c6-203608f5aa7a/content/math20_1.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/>
