When a point is removed (i.e. [tex](130, -35)[/tex]), both average and standard deviation are changed and a new least-squares line is created.
Given a minimum and representative set of points in a Cartesian plane, there is a given average and a standard deviation, of which slope and intercept of the least-squares line are determined.
When a point is removed, both average and standard deviation are changed and a new least-squares line is created. [tex]\blacksquare[/tex]
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