Professor Z had the following grade distribution in her class:                                  Grade                                               frequency                       96                                                         2                       91                                                         3                       85                                                         7                       80                                                        13                       75                                                        12                       70                                                        10                       60                                                         8                       50                                                         5 What is the class average (mean)?

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Professor Z had the following grade distribution in her class:              

                   Grade                                               frequency

                      96                                                         2

                      91                                                         3

                      85                                                         7

                      80                                                        13

                      75                                                        12

                      70                                                        10

                      60                                                         8

                      50                                                         5

What is the class average (mean)?

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