Describe the explained variation about a regression line in words and in symbols. Choose the correct answer below. O A. The explained variation is the sum of the squares of the differences (Xị, y;). between the predicted y-values and the mean of the y-values of the ordered pairs. (x, §) (x, y) O B. The explained variation is the sum of the squares of the differences between the observed y-values and the predicted y-values. OC. The explained variation is the sum of the squares of the differences between the y-values of each ordered pair and the mean of the y-values of the ordered pairs. y = y

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