Suppose that a regression yields the following sum of squares:?(yi?y?)2=360,?(yi?yË?i)2=60,?(yË?i?y?

Suppose that a regression yields the following sum of squares:?(yi?y?)2=360,?(yi?yˆi)2=60,?(yˆi?y?)2=300Then the percentage of the variation in y that is explained by the variation in x is: