Mean, Median, Mode Calculator
Calculate the mean (average), median (middle), mode (most frequent) and range (max − min) of any dataset. The four most basic descriptive statistics.
How to use the Mean, Median, Mode Calculator
- Enter your inputs into the Mean, Median, Mode Calculator above.
- Results update instantly as you type — no submit button needed.
- Adjust any value to see how the result changes in real time.
The four basic statistics
Mean = Σx/n · · · Median = middle value when sorted · · · Mode = most frequent value · · · Range = max − min
Mean is sensitive to outliers; median is robust. Mode may not exist (no repeats) or there may be multiple modes. Range is the simplest spread measure.
Worked example
Test scores: 78, 85, 85, 92, 96, 100. Mean = (78+85+85+92+96+100)/6 = 89.33. Median = (85+92)/2 = 88.5 (average of two middle values). Mode = 85 (appears twice). Range = 100 − 78 = 22.
Frequently asked questions
When is each statistic useful?
Mean: typical value when data is symmetric. Median: typical value when data has outliers. Mode: most likely category in categorical data. Range: quick measure of spread.
Can a dataset have multiple modes?
Yes — datasets with two equally-frequent values are bimodal; three or more are multimodal. Some datasets have no mode (all values appear once).
What if I have only one value?
Mean, median and mode are all that value. Range is zero. Standard deviation is zero (no spread).