Accuracy Methodology
Every accuracy figure we publish is produced by the rules below. They are served from the scoring service itself, so this page cannot describe a method other than the one that runs.
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Days on which the market did not resolve a direction are recorded as correct — a call cannot be wrong on a flat day — and are then excluded from every published rate. The figure we quote is therefore the stricter of the two available. Recomputing from the raw record without that exclusion produces a higher number than ours.
Machine-readable: accuracy/methodology