Standard Deviation Calculator
Calculate standard deviation, variance, mean, and z-scores for a dataset. Supports both population and sample calculations.
How to Use Standard Deviation Calculator
The Standard Deviation Calculator computes key statistical measures for any dataset. Enter your numbers separated by commas, spaces, or newlines and choose between population (σ) or sample (s) mode. The tool calculates the mean, variance, standard deviation, sum, count, and individual z-scores for each data point. Population mode divides by N while sample mode divides by N-1 (Bessel correction). Essential for statistics homework, data analysis, quality control, and scientific research. Handles datasets of any size with high precision.
Step-by-Step Instructions
- Enter numbers separated by commas, spaces, or newlines
- Select Population (σ) or Sample (s) mode
- Click Calculate to see results
- View standard deviation, variance, mean, and z-scores
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