Mean, Median, Mode Calculator
Enter Data
Enter a list of numbers to calculate mean, median, mode, and more.
Understanding Mean, Median, and Mode
Mean, median, and mode are measures of central tendency—they describe the center of a data set.
Definitions
- Mean (Average): Sum of all values divided by the count. Sensitive to outliers.
- Median: The middle value when data is sorted. Better for skewed data.
- Mode: The most frequently occurring value(s). A set can have no mode, one mode, or multiple modes.
Formulas
Mean:
Mean = Σx / nMedian:
Sort the data. If odd count, pick the middle. If even, average the two middle values.
Mode:
The value(s) that appear most often.
Example
Data: 3, 7, 7, 10, 15
- Mean = (3+7+7+10+15)/5 = 42/5 = 8.4
- Median = Middle value = 7
- Mode = 7 (appears twice)
- Range = 15 - 3 = 12
Frequently Asked Questions
Which measure should I use?
Use mean for symmetric data, median for skewed data or when outliers exist, mode for categorical data or to find the most common value.
Can a set have more than one mode?
Yes. A set is "bimodal" if two values tie for most frequent, or "multimodal" for many.