Accuracy

When we say 70%, does it happen 70% of the time?

We saidIt happenedEvents
4%3%75
14%11%18too few to read
25%13%24
33%29%7too few to read
45%41%17too few to read
55%60%5too few to read
64%43%7too few to read
75%64%11too few to read
85%89%18too few to read
97%100%104

How this is measured

The last price we showed at least 30 seconds before each event closed, against what actually happened. Only events that have settled, 286 of them. A price taken in the final seconds is nearly the answer, which is why it is not used.

What this does not prove

Most of these are short Bitcoin windows rather than a spread of subjects, and most of the prices came from our own pricing rather than from a crowd of traders. Any row with fewer than 20 events is marked, and should be read as nothing at all.

How events settle is on how events are decided. What trading costs is on what it costs.