Standard Deviation Calculator
Standard Deviation Calculator
Standard Deviation Calculator
Calculate variance, SD, and standard error of the mean
Calculate sample and population standard deviation to measure data dispersion. Essential for understanding statistical variability.
Key Features
Sample standard deviation
Population standard deviation
Variance calculation
Mean display
Automatic sorting
Clear formula explanation
How to Use This Tool
Enter numbers separated by commas
Enter numbers separated by commas
Click Calculate
Click Calculate
View both sample and population
View both sample and population SD
Compare the differences
Compare the differences
Use appropriate formula
Use appropriate formula
Use Cases
Statistical analysis
Quality control
Research data
Academic studies
Data science
Frequently Asked Questions
What is standard deviation?
Measure of data spread from mean
Sample vs Population?
Sample uses n-1, Population uses n
What is variance?
Square of standard deviation
When to use sample?
When estimating from subset
Tool Information
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