Average Calculator
Calculate mean, median, and more
About the Calculator
Averages help you make sense of a list of numbers, whether it is grades, sales, or performance stats. This calculator gives you the mean, median, minimum, and maximum so you can understand both the center and the spread. Use it to check homework, analyze results, or spot outliers that skew the average. It is especially helpful when the numbers are uneven, because the median often tells a clearer story. Enter a list of values and get instant results you can trust. It is a simple way to turn raw numbers into useful insights. Use the Average Calculator to get a clear result you can act on right away.
Mean (Average)
87.60
Median
88.00
Count
5
Min
78.00
Max
95.00
The Formula
How to Calculate Manually
- 1
List all your numbers.
- 2
Add all the numbers together to get the sum.
- 3
Count how many numbers you have.
- 4
Divide the sum by the count to get the mean.
- 5
For median: sort numbers, find the middle value (or average of two middle values).
Examples
What is the average of 85, 92, 78, 95, 88?
(85+92+78+95+88)/5 = 438/5 = 87.6
What is the median of 3, 7, 9, 12, 15?
9 (the middle value when sorted)
💡 Tips
- •Outliers can significantly affect the mean but not the median.
- •Use median for data with extreme values (like income).
- •Mean, median, and mode are all types of 'averages'.
- •Range = Maximum - Minimum gives a sense of spread.
🎉 Fun Facts
- •The "Average" American Doesn't Exist: Statistically, the "average American" has 1.93 children, 0.89 cars, and 2.6 TVs, but obviously no actual person has 1.93 children or 0.89 cars, showing why averages can be misleading for describing real individuals.
- •The Grading Curve Reality: When teachers "curve" grades, they're usually adjusting to a mean of 75-80%, but mathematically, half of all students will always be below average, making "above average" impossible for everyone despite what parents hope.
- •The Median NBA Salary Shock: The average (mean) NBA salary is $9.7M, but the median is $4.3M; this huge gap exists because superstars like LeBron ($48M) pull the average up, showing why median is often more meaningful than mean.
- •Lake Wobegon Effect: Named after Garrison Keillor's fictional town "where all the children are above average," studies show 93% of drivers rate themselves as "above average" drivers, a statistical impossibility demonstrating human overconfidence bias.
- •Regression to the Mean: Exceptionally tall parents typically have shorter children (still tall, but closer to average), and very short parents have taller children; this "regression to the mean" explains why extreme traits don't persist across generations.