Question: Simple linear regression is called ordinary least - squares regression because it aims to find the best - fitting straight line through a set of

Simple linear regression is called "ordinary least

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squares regression" because it aims to find the best

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fitting straight line through a set of points by minimizing the sum of the squares of the vertical distances from each point to the line. The term "ordinary" differentiates it from other forms of least

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squares methods that may incorporate constraints or penalties.

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