ABSTRACT
In Chapter 3 we considered the relationship between variables y and X = (x 1,x 2, …, x k), that is, the relationship between the column vectors. In this chapter, we turn our attention to the rows or individual data points ( x 1 i , x 2 i , … , x ki , y i ) https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315137674/cc6b8fae-3269-4d6a-b987-900dd59a6fe2/content/eq284.tif"/>
