Two different summaries
Win rate counts how many recorded trades finish positive. Mean net outcome divides the total after recorded costs by the number of trades. A high win rate can coexist with a negative mean when losing outcomes are larger.
A worked example
In an invented 20-trade sample, nine outcomes of +220 units and eleven of −120 units total +660 units: a mean of +33 units per trade before any omitted costs. This is a description of those twenty values, not an estimate of an attainable return.
What remains unknown
A positive sample average does not prove positive future expected value. Dependence between observations, changing conditions, selection bias, costs and a small sample can all matter. The showcase does not turn these measures into buy, sell or position-sizing instructions.
These notes explain the original design. They are not personalised analysis or investment, trading or financial advice. The creator receives no monetary benefit; the project has no employer or organisation affiliation.