On an international exam, students are asked to respond to a variety of background questions. For the 41 nations that participated in the exam, the correlation between the percentage of items answered in the background questionnaire (used as a proxy for student task persistence) and mean score on the exam was 0.728. Does this suggest there is a linear relation between student task persistence and achievement score? Write a sentence that explains what this result might mean. Does this suggest there is a linear relation between student task persistence and achievement score? Choose the best response below. What does this result mean?

The strong and positive relationship between the variables. Also, it suggests the linear relation between student task persistence and achievement score.

Step-by-step explanation:

Since the correlation between the percentage of items answered in the background questionnaire and mean score on the exam is 0.728, it means that there is a strong positive relation between items answered in background questionnaire and mean score.

Correlation is used to check the strength of the linear relationship between two variables. Its value lies between - 1 to + 1. It is denoted by "r".

If r lies between 0 to - 1 then they have a negative relationship.

If r lies between 0 to + 1 then they have a positive relationship.

If r lies between - 1 to - 0.5 or 0.5 to + 1 they have strong negative or strong positive relationships respectively.