About Statistics Calculator (Standard Deviation & Variance)
Comprehensive statistical analyzer computing mean, median, mode, sample variance (s²), population variance (σ²), sample standard deviation (s), Q1, Q3, and IQR.
Key Capabilities & Features
- Computes Sample Standard Deviation (s) and Population Standard Deviation (σ)
- Computes Sample Variance (s²) and Population Variance (σ²)
- Calculates First Quartile (Q1), Third Quartile (Q3), and Interquartile Range (IQR)
- Accepts raw number lists separated by commas, spaces, or line breaks
How to Use Statistics Calculator (Standard Deviation & Variance)
1
Enter Dataset
Type or paste your numbers separated by commas.
2
View Summary
Inspect variance, standard deviation, and quartiles.
Privacy & In-Browser Execution Guarantee
All calculations execute 100% in your browser with zero server uploads.
Frequently Asked Questions
When do I use sample vs population standard deviation?
Use sample standard deviation (s) when your numbers represent a subset of a larger group (divided by n-1). Use population (σ) when you have the entire population (divided by n).
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