I am confused about the meanings of these two goodness-of-fit descriptors.(adsbygoogle = window.adsbygoogle || []).push({});

If I have two independent variables and I wish to test the validity of a proposed functional relation between them (say I have measured electric potentials and currents and wish to test if the data reflects a linear relationship), which should I use?

What are the differences between these tests?

What texts would you recommend that have full proofs of such arguments?

Forgive me if this is a stupid question, but I have had difficulty in finding a text explaining the differences.

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# Chi Squared vs. Coefficient of Determination

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