⚡ Quick Answer
The three types of average: Mean (add all values, divide by count), Median (middle value when sorted), Mode (most frequent value). Example set: 2, 4, 4, 6, 8. Mean = (2+4+4+6+8)/5 = 4.8. Median = 4 (middle of sorted list). Mode = 4 (appears twice, all others once). Each average has different uses and sensitivity to outliers.
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📊 Mean, Median, Mode Calculator

Calculate mean, median, mode, range, and standard deviation for any set of numbers. Perfect for statistics students, researchers, and data analysts.

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Uses standard statistical formulas. Free for students and researchers. No sign-up needed.

🤔 How Does This Work?

  • Mean = Sum / Count
  • Median = middle value of sorted array
  • Mode = most frequent value(s)
  • Also calculates range, variance, standard deviation

❓ Frequently Asked Questions

When should I use median instead of mean?
Use median when data has outliers or is skewed. Example: average house price. If 9 houses cost 5 million and 1 cost 50 million, mean = 9.5 million (misleading), median = 5 million (representative). Income statistics often use median for this reason. Mean works best for normally distributed data without extreme outliers.
What if there is no mode?
If every number appears exactly once, there is no mode. If multiple numbers tie for most frequent, all are modes (bimodal, trimodal, etc.). For example: 1, 2, 2, 3, 3 has two modes: 2 and 3 (bimodal distribution). Mode is most useful for categorical data or discrete values.
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❓ FAQ
When should I use median instead of mean?
Use median when data has outliers or is skewed. Example: average house price. If 9 houses cost 5 million and 1 cost 50 million, mean = 9.5 million (misleading), median = 5 million (representative). Income statistics often use median for this reason. Mean works best for normally distributed data without extreme outliers.
What if there is no mode?
If every number appears exactly once, there is no mode. If multiple numbers tie for most frequent, all are modes (bimodal, trimodal, etc.). For example: 1, 2, 2, 3, 3 has two modes: 2 and 3 (bimodal distribution). Mode is most useful for categorical data or discrete values.