Dataset
Enter data numbers
Enter at least one number.
Math calculator
Average Calculator
Paste numbers separated by spaces, commas, tabs or lines to calculate mean, median, mode, sum, standard deviation, range and weighted average.
mean = sum / count
Average calculation steps
Enter numbers to see each calculation step.
Values graph
Distribution graph
Weighted average calculator
Enter one value and one weight per line.
Weighted average78.3333470 / 6
Average formulas
| Statistic | Formula | Meaning |
|---|---|---|
| Average (mean) | sum / count | Add all values and divide by count. |
| Median | middle sorted value | Sort and take the middle value. |
| Mode | most frequent value | Value or values appearing most often. |
| Population SD | √(Σ(x-mean)² / n) | Spread of the complete population. |
| Sample SD | √(Σ(x-mean)² / (n-1)) | Estimated spread from a sample. |
| Weighted average | Σ(value × weight) / Σ(weight) | Some values contribute more than others. |
Average calculator FAQ
Which separators can I use?
Spaces, commas, semicolons, tabs and line breaks.
Why do sample and population SD differ?
Sample SD divides by n-1; population SD divides by n.
Can geometric mean use negative numbers?
No. It is shown only when every value is positive.
What is weighted average?
An average where each value has an assigned importance weight.