A portion of the computer analysis obtained from Microsoft Excel 2010 is shown below: SUMMARY OUTPUT Regression Statistics R-Square 0.988 Regression Standard Error 12.420 Observations 52 Coeff StdError t Stat Intercept 286.42 9.66 X1 -0.31 0.06 X2 0.000067 0.00007 Find the sum of squared residuals, SSE, and the sum of the squared difference between the observed dependent variable and its average, SST