data transformations
A good, brief summary on what transformations to consider depending upon what the scatter plot looks like. Also runs through an example showing all the steps on the CAS. I don't think the question is answered appropriately and there are some statements at the end that you should disregard. We MUST compare coefficient of determinations NOT r values to see which is the best transformation.
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Another very detailed video. If you can't handle listening to her say "smooshing" again and again, you can skip to 13:48 where a summary table is shown. Then a worked example is performed. Again we use r squared NOT r value alone to determine best transformation.
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