Correlation

Higher stress scores tend to accompany higher depression scores: this is a positive correlation. The points do not lie perfectly along a line, so the relationship is a tendency, not a rule applying to every individual.

There is a positive correlation between excess body mass and the risk of developing type 2 diabetes: people who are overweight or obese are more likely to develop the condition than those who are not. Excess fat around the abdomen is also associated with increased risk.