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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?

Respuesta :

Answer:

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.

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