Applying the least squares method, a simple linear regression equation of Y on x to fit on the set of 4 pairs of values (xi, yi) was found.. The (xi, yi) data and the estimated values yz calculated based on the regression equation are displayed below after masking some values. 2. Ci yi yi 1 27 9 2 27 ** * 10 3 30 * * * 16 4 32 20 20 Find the missing y2 (the value hidden by * *). O 11 0 9 O 10 O Cannot be determined uniquely