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A study was performed looking at the students distance from the teacher and their average grade...

A study was performed looking at the students distance from the teacher and their average grade on quiz scores. A correlation of -.8 was found. Which of the following is a correct interpretation. Which one is it?

1-The correlation is -.8, so sitting closer to the teacher must cause the students to score higher on quizzes.

2-The correlation is -.8, so students who sit closer tend to score higher.

3-The correlation is -.8, so there is no association between quiz average and distance.

4-The correlation is -.8, so students who sit farther away tend to score higher.

Math   Statistics-And-Probability   
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Answer #1

Option 1 is correct. Correlation is -.8,so sitting closer to the teacher must cause the students to score higher on quizzes.

Correlation is -0.8 that means sign indicates the negative correlation exists between students distance from the teacher and their average grade on quiz score. That means distance of student decreases from teacher (student closer to teacher), an average grade on quiz score increases (both variables moves on opposite direction,one increases other decreases). So option 1 is correct

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