>Roll shows that the NWS forecasts explain about 90% of the
>variability in temperature. So the R2 is, I think, between 0.1-0.4,
>since only 10% of the variability was going un-forecast.
I love this. The NWS explains 90% of the variability, and this gets translated in the popular mind to "the futures market forecasts the weather better than the government." Hilarious.
Doug