It is about a man who lives alone in a village from which everyone fled during Lebanon's fifteen-year civil war.
VOA: special.2009.03.11
I computed the returns on the stocks, bonds, and oil for every year from 1983 and I computed the average returns, which I take as the expected returns, I took the standard deviations, and I took the covariance.
我计算了从1983年以来每年的股票,债券和石油的收益,从而得出平均收益率,这些平均收益率作为预期收益率,然后算得标准差及协方差。
Ron Wagner is from the Experimental Aircraft Association, which holds the event each year.
VOA: special.2010.07.30
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