Statistics explorer

Summarize a dataset — mean, median, mode, and spread — or query a normal distribution for the probability between any bounds.

Result

n10
Mean6.4
Median6.5
Mode8
Range3 to 9 (= 6)
Population SD (÷n)1.8547
Sample SD (÷n−1)1.9551
Dot plot
3456789median 6.5mean 6.4

Formula sources: Standard descriptive-statistics formulas and the normal CDF via the Abramowitz–Stegun error-function approximation

The normal-distribution probabilities use a numeric approximation of the standard normal CDF (accurate to about 7 decimal places) — not a symbolic solver.