A correlation coefficient of -0.86 indicates that there is a strong association between Low test grade and high number of missing assignments
The correlation coefficient value gives information about the strength and direction of association between two variables.
With a negative correlation coefficient value, the association is negative and a positive value infers a positive association. Similarly, as the value nears 1 or -1 , it indicates a strong relationship.
Here, a value of -0.86 indicates that there is a strong association between Low test grade and high number of missing assignments