Category: Analytics
Power BI starter: measures that match the question
Name Power BI measures after the question, write DAX that respects filter context, and test before the card goes live. Columns are raw material; measures are answers.
Peeking, guardrails, and stopping rules
Stop peeking at interim p-values as final decisions. Use fixed horizons or sequential plans, guardrail metrics, and a written stopping rule before launch.
Comparing groups without fooling yourself
Compare groups with an apples-to-apples checklist: mix, baseline, and window. Mix shifts fool more roadmaps than bad SQL.
Batch vs streaming in plain English
Real time is a latency budget, not a vibe. Learn batch, streaming, and micro-batch in plain English so you know when yesterday is fine, when minutes matter, and…
Axes, scales, and honest baselines
Axes decide whether a chart is honest. Learn baselines, truncated scales, dual-axis traps, and when a log scale helps so small differences stop looking like emergencies in the…
