Which of the following statistical measures is most helpful for indicating the extent to which high school grades predict college or university grades?
A) a scatterplot
B) a random sample
C) a correlation coefficient
D) an independent variable

Question

Quizplus · Accepted Answer

A correlation coefficient measures the strength and direction of the linear relationship between two variables. In this case, it would show how strongly high school grades and college/university grades are related. A scatterplot could also be helpful in visualizing this relationship, but a correlation coefficient provides a numerical value that is easier to interpret and compare with other studies. A random sample and independent variable are not relevant to this question.

Which of the Following Statistical Measures Is Most Helpful for Indicating