1. a mutual relationship or connection between two or more things
2. a statistical measure that expresses the extent to which two variables are linearly related
Usage: statistics; mathematics

Examples

• There is a strong correlation between smoking and lung cancer.
• The study found no correlation between income and happiness.
• Scientists discovered a positive correlation between exercise and mental health.
• The correlation coefficient measures the strength of the relationship between two variables.
• Researchers are investigating the correlation between sleep patterns and academic performance.
• A negative correlation exists between temperature and heating costs.
• The data shows a clear correlation between education level and employment rates.