Hello, I have three quizzes, and the current grade formula calculates the final grade as the average of Q1, Q2, and Q3. However, if a student has only attempted one quiz, the formula calculates the final grade by assuming the scores of Q2 and Q3 to 0, which is not desired. How can I update the formula so that the final grade is only calculated once all the grades for Q1, Q2, and Q3 are updated?