Suppose a school psychologist found a correlation between SAT scores of students who graduated from her school and their GPAs at the end of the first year in college.The correlation,r = .82,was based on a sample of 55 students whose SAT scores ranged from 450 to 550.The next year,one for her students made a 625 on the SAT and she wants to predict that students future GPA.Which of the following statements is true?
A)her prediction may be incorrect
B)her prediction will definitely be correct

Question

Quizplus · Accepted Answer

While the correlation coefficient of .82 suggests a strong positive relationship between the SAT scores and GPA of the students, it does not guarantee that the prediction for the next year will be accurate. The correlation only indicates an association between the two variables, and it is possible that other factors not accounted for in the study could influence the student's future GPA. Therefore, it is possible that the school psychologist's prediction may be incorrect.

Suppose a School Psychologist Found a Correlation Between SAT Scores