📐 Methodology

Explanations of the analytic indicators used by JPick Lab.

"What does the gap between xG and actual goals really tell us?" "How does the absence of a high-Player-Impact starter change a team's win probability?" "Do X-Factors with high Edge Scores actually change the flow of a game?" Methodology is the reference collection that answers these questions. From xG (expected goals) — the global football standard — to JPick's proprietary Player Impact (in-team influence) and Edge Score (breakout candidate rating). We break down each metric's calculation method and what it can and cannot tell us, building football data literacy in plain language for readers who aren't statistics experts.

Every Methodology article is a Living Document. When we update a metric's calculation logic, we update the article body so it always reflects the definition currently in use. Revision histories are logged at the bottom of each article. Come back to this index any time you need a refresher on how to read the data while browsing an Analysis or a Preview.