Additionally, a 2007 meta-analysis found a correlation between increased coffee consumption and lower risk of liver cancer.

CNN: Coffee good for you, but it's OK to hold back

This means that the data which shows a negative correlation between stock performance and GDP, has less data in it, and its negative correlation is only roughly 24%, while the analysis which shows a positive correlation between stock returns and GDP has a correlation of 66%.

FORBES: John Mauldin's Muddled Stock Return Model

Part of this analysis requires a correlation study to test if the asset class has unique risk.

FORBES: Basics of Asset Allocation (Part 2 of 2)

If an asset class has unique risk, it will exhibit variability in a rolling 3-year correlation analysis similar to Figure 2.

FORBES: Basics of Asset Allocation (Part 2 of 2)

Analysis showed a significant correlation with odour components produced by immune system genes inherited from the women's fathers.

BBC: Women sniff out ideal mates

The analysis found a 98 percent correlation between the leaked data and the data held by Blue Toad.

FORBES: iPhone And iPad UDID Data Not Stolen From FBI

An analysis comparing Wal-Mart Stores' (nyse: WMT - news - people ) same-store sales growth to consumer spending data dating back to January 2004, compiled by the Bureau of Economic Analysis, actually shows a negative correlation between the two.

FORBES: Wizardry At Wal-Mart

Subsequent detailed analysis of the IALS data showed a strong correlation in the United States between parental education and the literacy levels of youth.

UNESCO: II Part Analytic Section

Whether the criminal "underclass" is an identifiable and stable group may be questionable, but BBC analysis of people charged in relation to the disorder in Manchester does suggest a clear correlation with deprivation.

BBC: England riots: The feast of fools?