A corporation administers an aptitude test to all new sales representatives. Management is interested in the extent to which this test is able to predict their eventual success. The accompanying table records average weekly sales (in thousands of pesos) and aptitude test scores for a random sample of eight representatives. TEST SCORES                         WEEKLY SCORE 55                                                 10 60                                                  12 85                                                  28 75                                                  24 80                                                  18 85                                                  16 65                                                  15 60                                                  12   1. Determine the coefficient of determination

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