Question

What would the correlation coefficient -0.86 represent in the context of the situation?

Answer 1

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

Answer 2

Here, the table and scatter plot show the relationship between the number of missing assignment and the student's grade.

The correlation coefficient shows the relationship between the number of missing assignments and the student's grade.

To find the correlation coefficient, we have:

Make a straight line to connect the points on the graph

The correlation coefficient r, = -0.86

ANSWER:

-0.