Author: Jose S
The annotation habit
Treat titles, callouts, reference lines, a so-what line, and footnotes as part of the chart. Annotation turns a clean picture into a decision aid without lying.
Uncertainty and confidence in plain English
Read point estimates with intervals. Confidence intervals show a range of plausible values under a model. Statistical significance is not business importance.
Retention, deletion, and we might need it someday
Treat retention as a keep, archive, or delete decision with owners and dates. Prefer delete, anonymize, or aggregate over forever. Legal holds are a different job from “we…
Evals for humans
Build human-sized evals: spot checks, golden questions, and a regression set with clear pass criteria. Score analytics outputs before fluent wrong SQL or prose becomes process.
What is a semantic layer?
A semantic layer defines metrics and terms once for many BI tools. It is not a second warehouse. Start with one certified revenue metric before you buy a…
