ELI5: Explain Like I'm 5

Aggregate production function

An aggregate production function is a way of describing how much of a certain type of thing you can get from combining different types of things. For example, if you wanted to make a cake, you would combine eggs, flour, sugar, and other ingredients. The aggregate production function would tell us the amount of cake we would be able to make from combining a certain amount of eggs, flour, sugar, and so on.