Average/Mean Calculator
Calculate mean, median, mode, range, weighted average, grouped mean, quartiles, variance, standard deviation and outliers. Paste a list of values or enter weighted/grouped data with clear worked steps.
Calculator
Enter numbers separated by commas, spaces or new lines.
Enter each value and weight as value:weight, separated by commas or new lines. Example: 80:40, 65:20, 90:40.
Use value:frequency or lower-upper:frequency. Example: 10-20:5, 20-30:8, 30-40:3.
Target average
Find the missing value needed to reach a target mean.
Trimmed mean settings
Remove the same percentage from the lowest and highest values before calculating the mean.
Sample divides by n−1; population divides by n.
Quick examples
Worked steps
Sorted data and interpretation
Frequency table
| Value | Frequency | Percentage |
|---|
How averages work
The mean is the most common average. Add all values together, then divide by the number of values.
The median is the middle value after sorting the data. The mode is the most common value. The range is the largest value minus the smallest value.
Weighted averages are used when some values count more than others, such as coursework and exam components with different weightings.
Which average should you use?
Mean
Best when values are fairly balanced and you want the overall arithmetic average.
Median
Better when there are extreme outliers, such as income, house prices or unusually high scores.
Mode
Useful when you want the most common value or category.
Weighted mean
Use when some values are more important than others, such as grades with different percentage weights.