Question

Meredith interviews all of the students of her school who took both AP tests and the SAT. She finds that the relationship between the number of AP tests and SAT scores is linearly associated with a correlation coefficient of 0.93. What does this value suggest about the relationship between the number of AP tests and SAT scores

Answer 1

Correlation coefficient is the numerical representation of how one variable predicts the change of the other. In this case, if the AP tests scores and the SAT scores have 0.93 correlation coefficient, this means that the two results move in the same direction. When AP test results go up, then we can say that SAT scores will go up too, same also if one goes down, so does the other.