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Standard Deviation Calculator 🔢 📊

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📊 Do you want to know how spread out your data really is? Our Standard Deviation Calculator makes it effortless to analyze variability, and test the normality of the probability distribution—all with a simple input! Get instant insights with real-time calculations, interactive visualizations, and advanced statistical metrics. Try it now! 🔢✨

Published February 16, 2025 By EngiSphere Research Editors
Concept of Standard Deviation & Normality Test © AI Illustration
Concept of Standard Deviation & Normality Test © AI Illustration

Standard Deviation Calculator - Engisphere

Standard Deviation Calculator

A comprehensive statistical analysis tool from Engisphere

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

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

Statistical Results
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: -
Histogram with Normal Distribution Overlay
Data Points and Z-Scores

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! 📊✨

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