1. What is a Grade Average Percentage Calculator?

Definition: This calculator computes the average percentage from a list of grade percentages.

Purpose: It helps students and educators quickly determine the average performance across multiple assignments or tests.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \(\sum \text{Percentages}\) — Sum of all percentage values
• \(\text{Number of Grades}\) — Count of valid percentage entries

Explanation: The calculator adds all valid percentages (0-100) and divides by the count of grades to find the average.

3. Importance of Grade Average Calculation

Details: Calculating grade averages helps track academic progress, identify areas needing improvement, and determine overall course performance.

4. Using the Calculator

Tips: Enter percentages separated by commas (e.g., "85, 90, 78, 92"). Only values between 0 and 100 will be considered.

5. Frequently Asked Questions (FAQ)

Q1: What if I enter non-percentage values?
A: The calculator will ignore any values that aren't numbers between 0 and 100.

Q2: Can I calculate weighted averages with this?
A: No, this calculates a simple average. For weighted averages, each grade would need its own weight factor.

Q3: How many grades can I enter?
A: You can enter as many as needed, separated by commas.

Q4: What's the difference between median and average?
A: Average sums all values and divides by count, while median is the middle value when sorted. This calculator finds the average.

Q5: How precise is the calculation?
A: Results are displayed with 2 decimal places for accuracy.