A walkthrough, end to end.
- 1
Paste numbers separated by commas, spaces, or newlines.
- 2
The calculator returns count, sum, mean, median, mode(s), range, min, max, plus sample and population SD/variance.
- 3
Useful for class assignments, quick QC checks, and verifying spreadsheet stats.
Descriptive statistics
Mean = Σx / n. Median is the middle value of the sorted list. Sample SD divides by n−1; population SD divides by n.
What you can do with this.
Test scores summary
Mean, median, and SD for a class's exam scores in seconds.
Sensor noise check
SD of a row of measurements gives a quick noise estimate.
Comparing groups
Two datasets — compare means and SDs side by side.
QC sampling
Population SD for full samples, sample SD for inferring population.
Spreadsheet verification
Cross-check Excel's AVERAGE, MEDIAN, STDEV outputs.
Stats homework
Verify hand-computed answers in seconds.
Survey analysis
Summary stats for ratings on a 1–10 scale.
Statistics 2026 — what's current
Foundational descriptive stats; calculator wins for one-shot summaries.
Frequently asked.
Commas, spaces, or newlines — any combination works.
Both are shown. Sample uses n−1, population uses n.
All values sharing the highest frequency are listed. If every value is unique, no mode is reported.
No. All math runs in your browser.