Find the value of the linear correlation coefficient r. A study was conducted to compare the average time spent in the lab each week versus course grade for computer programming students. The results are recorded in the table below.   Number of hours spent in lab Grade (percent)   10                                                             96 11                                                               51 16                                                              62 9                                                              58 7                                                              89 15                                                            81 16                                                           46 10                                                           51

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