1. What is the Class Average Calculator?

The Class Average Calculator computes a weighted average of grades where each grade contributes proportionally to its assigned weight. This is particularly useful for calculating final grades where different assignments or exams have different importance.

2. How Does the Calculator Work?

The calculator uses the weighted average formula:

Where:

• \( \text{grade} \) — Individual grade percentage (0-100)
• \( \text{weight} \) — Weight of each grade (decimal value)
• \( \sum \) — Sum of all grade-weight products or weights

Explanation: Each grade is multiplied by its weight, these products are summed, then divided by the sum of all weights.

3. Importance of Weighted Average

Details: Weighted averages provide a more accurate representation of overall performance when different components contribute unequally to the final result, such as when exams count more than quizzes.

4. Using the Calculator

Tips:

• Enter grades as percentages (0-100)
• Enter weights as decimal values (e.g., 0.2 for 20%)
• You can separate values by commas or new lines
• The number of grades must match the number of weights

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between weighted and unweighted average?
A: Unweighted average treats all grades equally, while weighted average accounts for different importance levels of each grade.

Q2: How should I determine weights?
A: Weights should reflect the relative importance of each assignment (e.g., final exam might be 40% while homework is 10%).

Q3: Can I use this for GPA calculation?
A: Yes, if you convert letter grades to numerical values and assign appropriate weights.

Q4: What if my weights don't add up to 1.0?
A: The calculator normalizes the weights automatically by dividing by their sum.

Q5: How many grades can I enter?
A: You can enter as many as needed, but grades and weights must match in quantity.