All Articles & Tutorials
Explore practical guides, step-by-step masterclasses, and foundational definitions across AI, SQL, and data systems — written in plain, human English.
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What is Claude? A plain-English guide
Claude is Anthropic’s AI assistant family, not one single app. This Part 1 map separates company, models, and products so you can start on web or mobile without…
Common analytics traps
Survivorship, cherry-picking, averages of averages, wrong grain, and lonely numbers. Spot the traps that make clean charts support bad decisions.
How to write a one-page analytics brief
Stop starting with the warehouse. Use an eight-field one-page analytics brief to turn vague stakeholder asks into decision-ready work before you write a single query.
How to read a business number in context before you react to it
Counts, rates, denominators, and “compared to what?” A practical guide to reading workplace numbers without falling for lonely metrics or seasonal surprises.
How to tell when business data is clean enough to make a decision
Perfect data never arrives. Learn when an approximate answer is decision-ready, how to talk about confidence without fake precision, and a short quality checklist you can use before…
