The correlation coefficient (r) between the number of volunteers x and the number of bags of trash collected y is 0.654. What percent of the variation in the number of bags of trash collected can be explained by differences in the number of volunteers?
a.42.8%
b.34.6%
c.57.2%
d.65.4%
A correlation of 0.654 means that 65.4% of the difference in number of trash being collected can be explained by the differences in the number of volunteers
