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One person's meta data is another person's data. It's all data, just different perspectives.

R package for generating synthetic data sets synthpop.org.uk

Information content of age, birthday, and birth date johndcook.com/blog/2018/03/0…

The transform y = arcsine(√x) can make proportion data approximately normally distributed.

Extrapolating xkcd.com/605/

Power-law distributions in empirical data arxiv.org/abs/0706.1062

Brief introduction to fractional factorial designs johndcook.com/blog/2022/10/1…

frontier ai today

Pascal’s triangle, the Ramanujan principle, and what makes something look like a part of an ellipse or a part a parabola? statmodeling.stat.columbia.edu/2025/06/02/pas…

Pre-registration of clinical trials is associated with fewer positive findings theincidentaleconomist.com/wordpress/pre-…

Making sense of principal component analysis stats.stackexchange.com/questions/2691…

Lawyers keep getting caught submitting AI-generated bogus research in court filings. LLMs like ChatGPT hallucinate fake cases, and yet attorneys keep relying on it—citing fake sources, quotes, documents, etc. theverge.com/policy/677373/…

Manipulating the alpha level cannot cure significance testing frontiersin.org/articles/10.33…

Big correlations and big interactions johndcook.com/blog/2022/11/2…

OpenAI Gym is a toolkit for developing and comparing reinforcement learning algorithms. github.com/openai/gym

A time series satisfies an ARIMA(p, d, q) model if its dth differences satisfy an ARMA(p, q) model.

What *is* a neural network? youtu.be/aircAruvnKk

Body Roundness Index johndcook.com/blog/2024/09/0…