Sarah's Shifting Averages
Sarah's grades on her first eight math quizzes are as follows: 85, 69, 94, 79, 85, 86, 91, and 78. She has one more quiz to take before her final grade is calculated.
- If Sarah wants to finish with a mean of at least 84, what score does she need to get on the last quiz?
- Sarah's teacher has told her that she could choose to take the median of her scores as her grade instead. What score does Sarah need on her last quiz to maximize her grade?
Relevant InterMath investigations:
The Last Math Exam
Final Score