The correlation coefficient is a number between 1 and -1. A number close to 1 means two factors are positively correlated—they rise or fall together and at the same magnitude.

Example: In the late 1940s, a nationwide study conducted over several years found a high correlation between the incidence rate of new cases of polio among children in a community, and per capita ice ...

Negative correlation is a relationship between two variables in which one variable increases as the other decreases, and vice versa.

In the decades to come, the phrase correlation does not imply causation made its way into textbooks and academic journals, while the social sciences were made over with newfangled statistics.

For example, one may be interested in finding the correlation (coefficient) between (1) frequency of smoking and incidence of lung cancer, (2) scores in statistics and math exam, (3) per capita ...

Statistical mechanics provides a fundamental framework for understanding how collective phenomena in many-body systems give rise to macroscopic changes in state, known as phase transitions.

Correlation doesn't imply causation. You've probably heard that before. It's a true statement that's important in statistical analysis—if more tall people own cats, that doesn't mean that cats ...

Francis Galton's invention of correlation dates from late in the year 1888, and it arose when he recognized a common thread in three different scientific problems he was studying. Galton's own 1890 ...