How to Find Reliable Data Online: Sources, Methodology and Red Flags
A field guide to vetting numbers on the internet: prefer primaries over resellers, demand methodology, check units and seasonality, and the seven red flags that expose sloppy data.
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The AxioStats blog
Analysis, data guides and methodology from the AxioStats matrix — free to read, no paywall.
EUR/USD Explained: What Moves the Euro–Dollar Exchange Rate
EUR/USD is the most traded currency pair in the world. Here is what the rate actually quotes, the five forces that move it, and how to read euro–dollar charts without the jargon.
Free Economic Data APIs for Developers: FRED, BLS, Eurostat and More
A practical tour of the best free economic data APIs — FRED, BLS, Eurostat, World Bank, IMF — with endpoints, limits, license notes and the gotchas that trip up real projects.
Wikipedia Pageviews as a Leading Indicator of Public Interest in AI
Wikipedia pageviews are a free, high-frequency, publicly auditable measure of what people actually care about. Here is how to read them — and what five years of the 'Artificial Intelligence' article show.
The Most Popular JavaScript Frameworks, Ranked by npm Downloads
npm download counts are the closest thing to a popularity vote the JavaScript ecosystem has. Here is how to rank frameworks fairly, what the numbers hide, and the current state of the top five.
LLM Benchmarks Explained: MMLU, HumanEval and How to Read Them
MMLU and HumanEval are the two most quoted LLM benchmarks in the world. Here is what each actually measures, why scores are not comparable across vendors, and how to avoid the most common benchmark trap.
What Is the Federal Funds Rate and Why It Moves Everything
The federal funds rate is the most important interest rate in the world. Here is what it actually is, how the Fed controls it, and how it reaches your mortgage, your savings and your portfolio.
U.S. Inflation Rate: A Practical Guide to CPI Year-over-Year
What the U.S. inflation rate actually measures, why the year-over-year CPI is the number to watch, and how to read it without getting misled by noisy monthly prints.