re: Predict the 12/31/2012 prices...(Winners on page 6)

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Can you put the spreadsheet in google to share?

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Sure. How do I do that?

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I guess we aren't playing "price is right" rules.

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I think the absolute deviation from actual would be most accurate way.

I need to change my spreadsheet to put all percentages in a positive number regardless of if the prediction is over or under the actual and then take the average deviation for each person.

A +10% and a -10% deviation would average to a 0% total deviation but it should be a 10% average deviation, IMO.