Dependence is stricter than correlation: the population violates probabilistic independence. Correlation can help guide statisticians to finding a dependence be

Dependence is stricter than correlation: the population violates probabilistic independence. Correlation can help guide statisticians to finding a dependence between variables, because correlation measures how close or how far a sample is to independence. But this gives rise to the "Correlation does not imply causation" adage. Example of independent but correlated variables: http://www.tylervigen.com/spurious-correlations http://www.tylervigen.com/spurious-correlations