Statistics calculator
Paste a list of numbers to see center and spread: mean, median, mode, range, and standard deviation for study or small datasets.
Defaults to your region. Switch to compare any other scale.
Bessel’s correction for a sample of a larger population.
Result
19
Mean
- Count7
- Median18
- Mode15
- Range18
- Variance36
- Std. deviation6
About this tool
Descriptive statistics summarize a list of numbers without fitting a model. Mean, median, and mode describe the center; min, max, and range show spread; sample and population standard deviation quantify how far values sit from the mean.
Enter one number per line or separated by spaces. The page reports count, sum, average, median, and dispersion so you can check homework, lab data, or a small business series. Median is robust when a single outlier would pull the mean; mode highlights the most frequent value when categories repeat.
Results are educational summaries — not inferential tests. For grades and weighted averages see the GPA tools; for ratios alone use the percentage calculator.
Formula
Mean = Σx / nMedian = middle of sorted xs² = Σ(x − mean)² / (n−1)
How it is calculated
- Paste numbers separated by space, comma, or newline.
- Choose sample or population.
- Read mean, median, mode, range, variance, σ.
- If your country, school or provider uses different rules, pick another option in the “Standard” menu at the top.
Questions
Sample or population?
If these numbers are the entire set you care about, use population (divide by n). If they are a draw from a larger set, use sample (n−1).
When should I change the “Standard” setting?
When the rules you work with differ from the default chosen for your language. Options on this page: Sample (n−1); Population (n). The formula, steps and result update to match your choice.
Are the results official advice?
No. Calculate This is an educational tool. For important decisions, check primary sources or ask a qualified professional.