Overview & Core Concept
Add all student scores together and divide by the number of students.
Mathematical Formula
\mu = \frac{\sum x_i}{N}Step-by-Step Instructions
Add student scores
Sum all individual exam or assignment scores.
Divide by student count
Divide the sum by the total number of students.
Realistic Worked Example
Class Exam Mean
Scores: 80, 85, 90, 95.
- Sum = 350
- 350 / 4 = 87.5%
Class average is 87.5%
Key Takeaways
- Median protects against extreme zero outliers.
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Authoritative References & Academic Standards
Vetted against official government, institutional, and collegiate guidelines
National research guidelines on rubric construction, formative grading, and equitable student achievement evaluation.
Comprehensive historical and institutional documentation of standard 10-point scales, percentage cutoffs, and GPA conversion tables.
Educational mathematical foundations for calculating arithmetic means, category weights, and statistical dispersion.