Alternatively, stronger correlation may reflect a change in the willingness of investors in different countries to accept price volatility: if investors are more risk averse, they will insist on a higher return for the risks they bear by holding shares, so share prices would have to fall.

ECONOMIST: All fall down | The

The ratio is closely watched because as Ferrarone notes it shows a high degree of correlation to the year-over-year change in the OECD leading indicators, which in turn closely corresponds to market returns.

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Each marker on the correlation lines in Figure 1 signifies a 10 percent change in asset allocation from Asset Class A to Asset Class B.

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Ms Parcak found a precise correlation between settlement patterns in her study area and climate change.

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If the initial correlation is due to chance, shuffling up the numbers should not change it much.

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There is obviously a strong correlation between the level of involvement of the manager and the amount of change that occur.

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There was still a negative correlation between the size of the national debt and GDP growth, but there was no implied causal relationship or sudden change at 90 percent.

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