As I write this, it’s 2 days before the 2024 election, and Ann Selzer has just thrown certain odd sectors of the internet into chaos with her final pre-election poll showing Kamala Harris ahead(!) of Donald Trump in Iowa, 47-44. I hadn’t planned on running the Selzer+Silver model this year, because I haven’t been able to find any individual simulation draws from either new 538 (under G. Elliot Morris, formerly of the Economist) or Silver Bulletin (under Nate Silver, formerly of old 538) and because it gave exactly the same results as old 538 for the 2022 election....
Our Application for an ACX Grant
Note: This application was originally written for an ACX grant application in December 2023, but regardless of whether we receive that grant, we will have room for additional funding. Anyone interested should get in touch via the email below. Name: Second Hand Cartography Email: [email protected] 1-sentence description: A Novel Intervention to Improve Subjective Well-Being Among Animals Longer Description: In the past year, it has been persuasively argued that charities should focus on improving the subjective well being of individuals, rather than solely focusing on material conditions....
Election prediction 2022 update: Ann Selzer is very good at her job
In October, I pointed out that Ann Selzer, Iowa’s Queen of Polling, was so unnaturally good at polling elections that she actually had a better track record of predicting elections than Nate Silver. I therefore introduced the Selzer+Silver model, which aims to improve the FiveThirtyEight model by (basically) treating Selzer’s polls as the absolute truth and using them to anchor the FiveThirtyEight model results. At the time, my analysis was entirely retrospective and therefore could have been caused by cherry-picking results....
Ann Selzer is better at election forecasting than Nate Silver
What if I told you that there’s a way to improve the election forecasts from FiveThirtyEight? That it only uses publicly available information and doesn’t require any advanced math? The catch is that it only works in Iowa (but there’s a workaround). Here’s the trick: instead of using FiveThirtyEight’s weighted average of all the polls and demographic-based predictions, use the results from Ann Selzer’s final Iowa poll....
Spatial analysis is a minefield
Finding scientific papers with a plausible premise but terrible statistics is, if not an everyday occurrence, unfortunately common. This was the basically the entire shtick of psychology papers for a couple decades - find some plausible sounding premise to write a hypothesis about, run an experiment on the first 16 undergrads you can find, and keep running regressions until you find one where p < 0.05. And then you end up with experiments whose results can’t be replicated, because their conclusions were always based on random chance....
Covid Vaccine Effectiveness at 6 months
Note: This was written in Fall 2021, when Delta was predominant strain of COVID. It is not medical advice, and I have not revised or updated it in any way to account for new papers, new COVID variants, or new boosters While the initial clinical trials on the effectiveness of the COVID vaccines were astoundingly impressive, more recent studies have suggested that the vaccines may be less effective against Delta and that their effectiveness may decline over time....