What is the total number of students who obtained a grade between 7 and 8, inclusive? What is the average grade of students in this cohort?

The image provided is too blurry to read the data in the table. I can faintly see some numbers like "7" and possibly "18" or "19", but the full table content, including column headers and specific values, is unreadable.

To help you, please provide the data from the table in a clear format (e.g., by typing it out or sending a clearer image). Once the data is available, I can assist you with any calculations or further steps required.