Standard Deviation Calculator 🔢 📊

Puzzles & Calculators: Calculator; Numerical IQ; Probability; Statistics

Published February 16, 2025 By EngiSphere Research Editors

Concept of Standard Deviation Calculator & Normality Test © AI Illustration

Standard Deviation Calculator - Engisphere

A comprehensive statistical analysis tool from Engisphere

Enter your dataset in the input field below, separating numbers with semicolons (;) or spaces.
Results will update in real-time as you modify your data.
The histogram will show the distribution of your data with a normal curve overlay.
Outliers will be highlighted in the data table (orange for moderate outliers, red for strong outliers).
All calculations are performed in your browser - no data is sent to any server.

Example input: 23.5; 42; 15; 31.8; 27

Dataset

Mean (μ or x̄): -

Median: -

Mode: -

Variance (σ² or s²): -

Standard Deviation (σ or s): -

Coefficient of Variation (CV): -

Range: -

Interquartile Range (IQR): -

Skewness: -

Kurtosis: -

Normality Test: -

Understanding data variability is key to making informed decisions, whether in engineering, finance, or everyday analysis. Our Standard Deviation Calculator goes beyond just numbers—it helps you visualize patterns, detect outliers, and even test the normality of the probability distribution. Whether you're a student, researcher, or professional, this tool makes complex statistics simple and accessible. Explore your data, and uncover hidden insights! 📊✨

Try also:

Probability Distribution Calculator—our tool to experiment with different distributions in real-time.
Random Number Generator and see how the nature of numerical randomness differs across various distributions.
Monte Carlo Stock Price Simulator to forecast the possible outcomes and their likelihood.