Mike Thompson of Thomson Financial says that, since 1991, the correlation between the performance of high-yield bonds and the S&P 500 index has been pretty low—less than 20%.

汤姆逊金融公司的迈克•汤姆逊这样说道，自1991年，高收益债券和标普500指数之间的相关性就非常低，不到20%。

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The study found there was a correlation between the ratings on the index and proportion of citizens who were married or Shared their home with a partner.

研究发现指数高低与结婚或同居的人数比例是相关的。

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The study found there was a correlation between the ratings on the index and proportion of citizens who were married or shared their home with a partner。

研究发现指数高低与结婚或同居的人数比例是相关的。

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Once you know the average return, the standard deviation of each index and the correlation coefficient between each pair of indexes, the rest is math.

FORBES: Asset Allocation and the Efficient Frontier

Since the spike in market volatility that started in the middle of July, the correlation between ICON and a diversified synthetic index of retailers that we put together has soared.

FORBES: William and Mary's Iconic Stock Pitch

Nor was there any correlation between the size of index funds in particular commodities and the price rise for those raw materials.

ECONOMIST: Investors may not have caused commodity price rises