The standard deviation in the National League that year was .063, meaning that a "typical" team had a winning percentage between 0.436 and 0.564 (we also weighted the deviation averages by division, since schedules had teams playing more games within their own division than outside of it).

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The 500 stocks that make money consistently each of the last four quarters are weighted based on their daily standard deviation over the last 180 trading days, compared to their average.

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Table 3 below provides a summary of the annualized standard deviation and returns for each asset class, the weighted average risk and return and the total portfolio risk and return from January 1979 through December 2009.

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