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ToolsSoil MechanicsLab Data Analysis

Standard Deviation Calculator

Calculate mean, standard deviation, variance, standard error, and range from lab test data. Supports sample (n-1) and population (n) modes.

Last updated 5 May 2026

Use 'Sample' for lab test results (almost always). 'Population' only if you have the entire dataset.

Separate values with commas, spaces, or new lines. Minimum 2 values.