calculationType
Population Standard Deviation Calculator (σ)
Calculate the population standard deviation (σ) and variance (σ²) for a complete dataset.
Population and sample standard deviation formulas follow ISO 3534 statistical definitions and NIST/SEMATECH e-Handbook of Statistical MethodsReview is overdue.Reviewed: March 2025Full Methodology
Quick Tips
Click to show tips
Try an Example
Pick a scenario to see how the calculator works, then adjust the values
Exam Scores
Analyse variability in a set of student exam scores
Key values: 12 data points · population · moderate spread
Stock Prices
Sample analysis of daily closing prices with outlier detection
Key values: 5 data points · sample · outlier detection
Dataset with Outliers
Identify unusual values in a data set using the IQR rule
Key values: 10 data points · population · 1 outlier
Related calculationType Variants
Explore more calculationType options
More Statistics Calculators
Explore the category