Calculateur d'Écart-Type

Use the free online Calculateur d'Écart-Type tool. Fast, private and easy to use — runs entirely in your browser. Part of our Calculateurs de Statistiques collection.

Calculateur de Médiane et Mode

Find the median, mode, sum, count, minimum and maximum of any list of numbers.

Calculateur d'Écart-Type

Get both the population and sample standard deviation of a data set, with the mean shown for context.

Calculateur de Variance

Measure how spread out a data set is with population and sample variance.

Calculateur de Score Z

See how many standard deviations a value lies from the mean with z = (x − μ) / σ.

Calculateur de Permutations et Combinaisons

Count arrangements and selections instantly — nPr for ordered picks and nCr for unordered ones.

Calculateur d'Étendue

Find the range of a data set — the difference between its largest and smallest values.

Calculateur de Coefficient de Variation

Compare the relative spread of data sets with CV = σ / μ expressed as a percentage.

Calculateur de Mi-Étendue

Compute the midrange — the midpoint between the minimum and maximum of a data set.

Questions Fréquentes

Is the Calculateur d'Écart-Type free to use?
Yes. The Calculateur d'Écart-Type is completely free with no sign-up, no limits and no watermarks. You can use it as many times as you like.
Is the Calculateur d'Écart-Type safe and private?
Absolutely. The Calculateur d'Écart-Type runs entirely in your browser, so your data never leaves your device and nothing is uploaded to a server.
Do I need to install anything to use the Calculateur d'Écart-Type?
No installation is needed. The Calculateur d'Écart-Type works instantly online in any modern browser on desktop, tablet or mobile.
Does the Calculateur d'Écart-Type work on mobile phones?
Yes. The Calculateur d'Écart-Type is fully responsive and works smoothly on iPhone, Android and any other device.