Every course has the same influence
Counting course grades equally can give the wrong result when their credit values differ.
Weight each grade by its credits
A 4-credit A at 4.0 contributes 16 quality points. A 2-credit B at 3.0 contributes 6. Together: 22 ÷ 6 = 3.67, rounded—not the simple average of 3.50.





