A study analyzes the relationship between the number of study hours (x) and test scores of students (y). The data yield a linear correlation coefficient of r=0.867r=0.867. Use the given value of rr to find the coefficient of determination and the percentage of the total variation in test scores that can be explained by the number of study hours.

r2=$$0.7517r^2=0.7517$$, 75.17%75.17\% of the variation can be explained.

r2=$$0.9482r^2=0.9482$$,94.82%94.82\% of the variation can be explained.

r2=$$0.9172r^2=0.9172$$, 91.72%91.72\% of the variation can be explained.

r2=$$0.8670r^2=0.8670 86.70$$%86.70\% of the variation can be explained.

A study analyzes the relationship between the number of study hou...

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