eli5: How do classes that mark on a curve work?

Question

eli5: How do classes that mark on a curve work?

In: 1

Answer 1

There are several ways classes can be curved, and the expression refers to the infamous bell curve shape of regularly distributed data. This means that there should a large clump in the middle that quickly tapers off in both directions. The average should be 80, and most people should be 70-90 with as many getting 95 as got 65. If you look at your class average and it’s clumped around 70 instead of 80, you have to shift the grades up by ten points to have the “curve” of the grades centered on a normal number