Blog - Sharon Lohr

https://www.sharonlohr.com/blog

5 posts

Science 40% · Writing 40% · Tech 20%

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  1. CDC Wastewater Viral Activity Level Maps: Why Are They Bluer?

    My favorite statistical podcast is actually about virology. The hosts of This Week in Virology (TWiV) are superb data communicators, and they often highlight statistical virtues or shortcomings of the virology and infectious disease papers they discuss. In TWiV 1352, recorded on August 26, 2026, Dr. Daniel Griffin used a statistical term that was new to me, saying that the Centers for Disease Control and Prevention (CDC) had “bluewashed” COVID-19 heat maps. Heat maps indicate activity level by…

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  2. Random Selection and Democracy in Athens and Asimov

    The NOVA episode “Athens: Birthplace of Democracy,” which aired on Arizona PBS on July 1, 2026, stated: “For the ancient Greeks, true democracy only worked through the extensive use of random selection.”The candidate selection process in Isaac Asimov’s classic short story “Franchise” represents the opposite extreme, with no randomness (and perhaps no human input). Let’s look at some aspects of random selection as it relates to democracy through these examples. This post contains questions and…

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  3. Thomas Jefferson and Population Estimates

    In June 1826, Thomas Jefferson was too ill to accept the Washington DC mayor’s invitation to participate in the fiftieth anniversary celebrations of the Declaration of Independence. In his polite letter declining the invitation, Jefferson wrote of his hopes for the document he had authored:May it [the Declaration of Independence] be to the world, what I believe it will be, (to some parts sooner, to others later, but finally to all,) the signal of arousing men to burst the chains under which…

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  4. AI and Survey Sampling Problems

    My previous post discussed the performance of the artificial intelligence (AI) interface Gemini on undergraduate statistics problems. Now let’s look at how Gemini answers some of the problems in my sampling textbook (Lohr, 2022), and talk about how Gemini could help students learn sampling.Evaluate a Survey QuestionQuery: Evaluate the following survey question for the purpose of estimating the number of American adults who have seen the movie Citizen Kane: "According to the American Film…

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  5. AI vs. Undergraduate Statistics Students

    I submitted some of my undergraduate class assignments to Gemini. How did it do?

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