Mastery and weight provide the course creator with a method to control the value of a test.
Mastery is a number you give the test to identify how many correct questions the student needs to pass a test.
For example, you may create a test with 10 questions and the student needs eight questions to pass or receive a certificate of completion. The mastery score will be eight.
This graphic shows a test with six questions. To receive a mastery, the student must answer four questions correctly.
Weight provides the course creator with a way to give the student extra credit for difficult questions or no credit for a easy question.
An average question may have a weight of one (point) while a difficult question may have a weight of three (points).