Mean / Median / Mode Calculator
Analyze any list of numbers with key statistical measures and a visual bar chart
What Does This Tool Do?
The Mean / Median / Mode Calculator takes any list of numbers and instantly computes the most important measures of central tendency and spread. Enter your data separated by commas or spaces, and see the mean (average), median (middle value), mode (most frequent value), range, count, sum, minimum, and maximum. The sorted list highlights which values are the mode, and a bar chart visualizes the distribution of your data. This tool is ideal for students working on statistics homework, teachers preparing examples, analysts exploring datasets, and anyone who needs quick descriptive statistics.
How to Use
- Enter your numbers in the text area, separated by commas, spaces, or both. For example: 5, 12, 7, 3, 12.
- View the statistics that update automatically: mean, median, mode, range, count, sum, min, and max.
- Check the sorted list to see your values in order. Mode values are highlighted in orange, and median value(s) in purple.
- Review the bar chart for a visual representation of your data values and how they compare to each other.
Mean vs. Median vs. Mode
Mean (Average)
The mean is calculated by adding all values and dividing by the count. It uses every data point, which means outliers can pull the mean away from the center. Best used when data is symmetrically distributed. Learn more
Median (Middle Value)
The median is the middle value when data is sorted. If there is an even number, it is the average of the two middle values. Resistant to outliers, making it better for skewed data. Learn more
Mode (Most Frequent)
The mode is the value that appears most often. A dataset can have no mode, one mode, or multiple modes. The only measure that works for categorical data. Learn more
FAQ
What if there is no mode?
If every value in your dataset appears the same number of times (all unique or all equally frequent), the tool reports "No mode." This is a valid statistical outcome.
How is the median calculated for an even number of values?
When the count is even, the median is the average of the two middle values. For example, in the sorted set {3, 5, 7, 9}, the median is (5 + 7) / 2 = 6.
Can I enter negative numbers or decimals?
Yes. The tool accepts negative numbers (like -5) and decimal values (like 3.14). Enter them just as you would any other number, separated by commas or spaces.
Is there a limit to how many numbers I can enter?
There is no hard limit, but the bar chart works best with up to about 50 values. Beyond that, the statistics are still calculated correctly, but individual bars become very narrow in the chart.
What does the bar chart show?
Each bar represents one value from your sorted dataset. The bar height is proportional to the value. A horizontal dashed line shows the mean, giving you a visual reference for how each value compares to the average.