The fact that R-squared shouldn’t be used for deciding if you have an adequate model is counter-intuitive and is rarely explained clearly. This demonstration overviews how R-squared goodness-of-fit works in regression analysis and correlations, while showing why it is not a measure of statistical adequacy, so should not suggest anything about future predictive performance.
Originally from KDnuggets https://ift.tt/3fkohvg
source https://365datascience.weebly.com/the-best-data-science-blog-2020/r-squared-does-not-measure-predictive-capacity-or-statistical-adequacy
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