How this calculator works
Sort values numerically to find the center. An odd count has one middle value; an even count uses the average of the two middle values. Unlike the mean, a median is less influenced by extreme observations.
The formula
Odd count: center value
Even count: (two center values) / 2A quick example
For 1, 3, 7, 9 the median is (3 + 7) / 2 = 5.
How to use this calculator
- Enter the labeled values, using a decimal point for fractions.
- Check the units and assumptions.
- Calculate, review the result and copy it if needed.
A few common questions
How is this result calculated?
Odd count: center value
Even count: (two center values) / 2
What assumptions should I check?
Sort values numerically to find the center. An odd count has one middle value; an even count uses the average of the two middle values. Unlike the mean, a median is less influenced by extreme observations.
Can I see a worked example?
For 1, 3, 7, 9 the median is (3 + 7) / 2 = 5.