Should I drop my lowest test score?

Some instructors allow dropping the lowest score. Check your syllabus. If allowed, remove the lowest before averaging.

How does one bad test affect my average?

One low score pulls the average down proportionally. With 4 tests, each contributes 25% to the average.

Yes, weighted averages count some tests more heavily. A midterm worth 30% counts more than a quiz worth 10%.

Calculate the average of multiple test scores to determine your overall test performance across exams.

Test 1 Score

Test 2 Score

Test 3 Score

Test 4 Score

Average Score

85.8

Total Points343.0

Score Range14.0

Average Score vs Test 1 Score

The test score average is the arithmetic mean of all test scores.

Average = (Test 1 + Test 2 + ... + Test N) / N

This gives equal weight to every test.

A student has four test scores: 85, 92, 78, 88.

Average multiple grades.

Calculate weighted average of scores.

Calculate test accuracy percentage.