I need help with a math problem
Professor Wong had the following grade distribution in her class.
Grade | Frequency |
---|---|
96 | 2 |
91 | 3 |
85 | 8 |
80 | 13 |
75 | 12 |
70 | 10 |
60 | 8 |
50 | 5 |
What is the class average (mean)? (See Example 3. Round your answer to two decimal places.)