a correlation in which large values of one variable are associated with large values of the other and small with small; the correlation coefficient is between 0 and +1
- There is a direct correlation between exposure to sun and skin cancer.
- Chemical compounds and mixtures containing uranium and thorium are active in direct proportion to the amount of these metals contained in them.
- The contents of soluble sugar of SWS were in direct proportion to the water stress.
- The correlation was found between soil moisture and herbage coverage was significant.