How to Use the Average Grade
- Enter each grade separated by commas or in the score inputs.
- View instant mean average, lowest score, highest score, and letter grade.
- Optionally test dropping the lowest score to see grade improvement.
Mathematical Formula Behind Average Grade
Add all numerical grades together and divide by the total number of grades.
\bar{x} = \frac{1}{n} \sum_{i=1}^{n} x_iStep-by-Step Worked Example
Scenario: Four test scores: 85, 92, 78, and 90.
(85 + 92 + 78 + 90) / 4 = 345 / 4 = 86.25%.
Outcome: Average score is 86.25% (Grade: B).
Frequently Asked Questions
How does dropping a low score affect my average?
Dropping the lowest score removes negative outliers, immediately lifting your mean average. For example, dropping a 60% from a set of 90, 85, and 60 boosts the average from 78.3% to 87.5%.