Rapidly used in agronomy, correlation coefficient 'r' lies between

Solution (By Examveda Team)

The correlation coefficient (r) is a measure of the closeness of association of the points in a scatter plot to a linear regression line based on the points.
Possible values of the correlation coefficient range from -1 to +1, -1 indicates a perfectly linear negative i.e. inverse correlation and +1 indicates a perfect linear positive correlation.