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SAS Tip: PCR data are exponential in nature (Daily tip for 2025-Jun-24)

PCR data are exponential in nature so make sure to take the logarithmic transformation to linearize the data in order to use normal theory.

Thanks to Jesse Canchola and Pari Hemyari for this tip. Read more details in this paper from WUSS 2017: Variance Ratio Estimation using the PrecMod SAS Macro.

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A "SAS tip" is a basic unit of information exchange between SAS users. The tips on this board come from sasCommunity.org, from SAS user conferences, from SAS blogs, and from freelance contributions from SAS users like you. We hope that you're able to always learn something new here!


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Tip-o-meter: 65 tips

AI Explained: Techniques and Tricks to Improve the Interpretability of Machine Learning Models

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