Every plant manager has a "golden batch": the run that went perfectly and that everyone secretly compares against. The problem is that a single golden batch is an anecdote. This week you replace the anecdote with an envelope: what 80 normal batches look like together, with statistical limits instead of someone's gut thresholds. The analogy from your world is the portfolio dashboard. A single project running 5% late …
If you only do one thing this week: T² limits computed
James, Witten, Hastie, Tibshirani & Taylor, An Introduction to Statistical Learning with Applica…
Saturday sandbox
· after Crash Course Statistics
James, Witten, Hastie, Tibshirani & Taylor, An Introduction to Statistical Learning with Applications in Python — free PDF at statlearning.com — Ch. 2 (whole) and 3.1-3.3 only. Moved out of core on 2026-09-29