Intrade.com and that S-shape

By: on June 23, 2008


In my last post about this I observed an S-shape in the results of the polling data, and speculated that it might show psychological bias on the part of the Intraders. I’m not so sure now. This graph shows all polls in the last 30 days; recent polls are dark colours and older ones lighter, and the S-shape is much less visible. So it may simply be an artifact of the way we aggregate polling data to generate a single figure.

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