The following regression equation was computed from a sample of 11 observations: Y' = 21-5X SSE was found to be 140, and SS total 420. (Round the MS-values to 3 decimal places.) Source SS df MS F Regression 18.00 Error Total 3. Determine the standard error of estimate. (Round the final answer to 4 decimal places.) b. Determine the coefcient of determination. (Round the final answer to 2 decimal places.) ,2: c. Determine the correlation coefficient. (Caution: Watch the sign!) (Negative answer should be indicated by a minus sign. Round the final answer to 3 decimal places.) r= The sign of ris (Click to select) v because the sign of b is negative