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WPCalc Wise People Calculate

Average Percentage Calculator

This calculator allows you to find the average percentage of a set of values using either the simple mean or the weighted mean method. Whether you're analyzing exam scores, financial metrics, or statistical data, it supports both equal and variable importance across entries.

Calculate Simple or Weighted Average Percentage

Input Fields
p
%
p
%
If enabled, the result will update automatically when you change any value.

Average Percentage Formulas

Formula
\[ \text{Simple Average Percentage:} \\[1em] \text{Average} = \frac{P_1 + P_2 + \cdots + P_n}{n} \\[2em] \text{Weighted Average Percentage:} \\[1em] \text{Weighted Average} = \frac{P_1 \cdot W_1 + P_2 \cdot W_2 + \cdots + P_n \cdot W_n}{W_1 + W_2 + \cdots + W_n} \]

Explanation:

  • The simple average assumes each percentage has equal weight.
  • The weighted average multiplies each percentage by its weight (e.g., credit hours, sample size) and divides by the total weight.

Average Percentage – Calculation Examples

Simple average example:

Percentages: 80%, 90%, 70%
(80 + 90 + 70) / 3 = 240 / 3 = 80%

Result: Average = 80%

Weighted average example:

Percentages: 80%, 90%, 70%
Weights: 1, 2, 1
(80×1 + 90×2 + 70×1) / (1 + 2 + 1) = (80 + 180 + 70) / 4 = 330 / 4 = 82.5%

Result: Weighted average = 82.5%

This calculator is ideal for students calculating average grades, marketers analyzing campaign effectiveness, and anyone working with proportion-based data. You can choose the calculation method based on whether all values carry the same significance or not.

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