The correct answer for this question is this one: "B. 90.7%" The percent of variation in the reading level can be explained by changes in the grade level is <u>90.7%</u> <span>You have to compute the coefficient of correlation and then use a formula to get the explained variation. </span> Hope this helps answer your question. Should you have more questions, do not hesitate to post in brainly. These are the following choices: <span>A. 74.7%
B. 90.7% C. 82.4% D. 86.6%</span>
