Explained and unexplained variation and the leastsquares regression line Given the following data: x at 107.4 125.7 122.1 131.9 127.4 123.1 132 145.5 147.7 141.6 What is the equation for this sample? v = 72.096 + 0.479x What is the variation in the sample v values that is not explained by the estimated linear relationship {55E}? What is the proportion of the toal variation in the sample v values that is explained by the estimated linear relationship (rsquared}? For the data point {1014,1257} what is the residual? lI