Average Calculator

Calculate different types of averages: arithmetic, geometric, harmonic, and weighted averages with step-by-step solutions and explanations.

Average Calculator

Calculate different types of averages: arithmetic, geometric, harmonic, and weighted averages:

Select Average Type

Enter Numbers

Enter numbers separated by commas (e.g., 10, 20, 30)

Average Results

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Enter numbers to calculate the average

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What is an Average?

An average is a measure of central tendency that represents the typical value in a set of numbers. There are several types of averages, each with specific applications and mathematical properties. Understanding different types of averages is crucial in statistics, mathematics, and data analysis.

The most common types of averages are:

  • Arithmetic Mean - The sum of all values divided by the count
  • Geometric Mean - The nth root of the product of n values
  • Harmonic Mean - The reciprocal of the arithmetic mean of reciprocals
  • Weighted Average - Each value multiplied by its weight, then divided by the sum of weights

How to Use the Average Calculator

Step 1: Select Average Type

Choose from four different types of averages: arithmetic mean, geometric mean, harmonic mean, or weighted average.

Step 2: Enter Numbers

Input your numbers separated by commas. For weighted average, also enter the corresponding weights.

Step 3: Get Your Results

The calculator will provide the average, step-by-step calculation, and detailed explanation.

Types of Averages

Arithmetic Mean

The most common type of average, calculated by summing all values and dividing by the count.

Formula: (x₁ + x₂ + ... + xₙ) / n

Use for: General data analysis, test scores, temperatures

Geometric Mean

The nth root of the product of n values, useful for growth rates and ratios.

Formula: ⁿ√(x₁ × x₂ × ... × xₙ)

Use for: Investment returns, growth rates, ratios

Harmonic Mean

The reciprocal of the arithmetic mean of reciprocals, useful for rates and speeds.

Formula: n / (1/x₁ + 1/x₂ + ... + 1/xₙ)

Use for: Average speeds, rates, ratios of rates

Weighted Average

Each value is multiplied by its weight, then divided by the sum of weights.

Formula: (w₁x₁ + w₂x₂ + ... + wₙxₙ) / (w₁ + w₂ + ... + wₙ)

Use for: Grade point averages, portfolio returns, survey results

Common Examples

Example 1: Arithmetic Mean

Find the average of 10, 20, 30, 40

Solution: (10 + 20 + 30 + 40) / 4 = 100 / 4 = 25

Example 2: Geometric Mean

Find the geometric mean of 2, 8, 32

Solution: ³√(2 × 8 × 32) = ³√(512) = 8

Example 3: Weighted Average

Grades: 85, 90, 78 with weights: 2, 3, 1

Solution: (85×2 + 90×3 + 78×1) / (2+3+1) = (170 + 270 + 78) / 6 = 86.33

Applications of Different Averages

Finance

Arithmetic mean for simple returns, geometric mean for compound returns, weighted average for portfolio performance.

Education

Weighted averages for GPA calculations, arithmetic mean for test scores, harmonic mean for average speeds in physics.

Science

Geometric mean for growth rates, harmonic mean for average speeds, arithmetic mean for measurements.

Business

Weighted averages for customer satisfaction, arithmetic mean for sales data, geometric mean for growth rates.

When to Use Each Type

Arithmetic Mean

  • • General data analysis
  • • Test scores and grades
  • • Temperature averages
  • • Simple financial returns

Geometric Mean

  • • Investment returns
  • • Population growth rates
  • • Ratio data
  • • Multiplicative processes

Harmonic Mean

  • • Average speeds
  • • Rates and ratios
  • • Electrical resistance
  • • Time-based calculations

Weighted Average

  • • GPA calculations
  • • Portfolio returns
  • • Survey results
  • • Performance metrics

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