mean rainfall rainfall mode median rainfall percentage of rainfall
I gave my students this multiple choice question: A student has recorded rainfall amounts for 28 days and uses a calculator to determine the total rainfall. What does the student calculate when she divides the total rainfall by 28?

Only one answer is correct among these 4 choices:
- mean rainfall
- rainfall mode
- median rainfall
- percentage of rainfall

Could you tell me which one is correct?

mean rainfall