Mathematics · Statistics
Mean and Median Calculator
Calculate the arithmetic mean and median of six values.
Inputs and results stay in this browser. Change one value at a time to explore the relationship.
Calculation steps
- Add the values: 1 + 2 + 3 + 4 + 5 + 9 = 24.
- Mean = 24 ÷ 6 = 4.
- Ordered data: 1, 2, 3, 4, 5, 9; median = (3 + 4) ÷ 2 = 3.5.
Definition and formula
The mean uses every value and is sensitive to extremes; the median identifies the centre of the ordered data.
Mean = sum ÷ count; median = middle value or middle-pair average
Worked example
For 1, 2, 3, 4, 5, 9, the mean is 4 and the median is 3.5.
Common mistake
Sort the values before selecting the middle value or pair for the median.
How to learn with this calculator
Begin with the worked example, then change one value while keeping the others fixed. Compare the new result and calculation steps to identify which part of the formula changed.
Clear answers
Frequently asked questions
What does the Mean and median do?
Calculate the arithmetic mean and median of six values.
How does the Mean and median work?
The calculator applies Mean = sum ÷ count; median = middle value or middle-pair average. The mean uses every value and is sensitive to extremes; the median identifies the centre of the ordered data.
What can I learn from the Mean and median?
It connects the mathematical rule to your chosen numbers and shows each calculation step. Change one input at a time to see how the result responds.
Does MW SysArc receive or store what I enter?
No. The calculation runs locally in your browser. MW SysArc does not receive or store your calculation inputs.
How should I use the result?
Use the steps to understand the method, then verify important school or professional work using the notation and rounding rules required in your setting.
Last reviewed 2026-07-14. Calculations tested 2026-07-14.