Standard Deviation Calculator - Free Online | ToolXHub

Enter a set of data (separated by commas or spaces), and the tool calculates: mean (arithmetic mean), median (sorted median), mode (the most frequently occurring value), variance (dispersion of the data), standard deviation (square root of variance).

Standard deviation formula: Sigma = D (Sigma (xi - μ) ² / N). The denominator for the sample standard deviation is N − 1 (Bessel correction) and the denominator for the total standard deviation is N. The tool automatically distinguishes and displays two results.

The smaller the standard deviation, the more concentrated the data, and the larger the standard deviation, the more scattered the data. Measure financial risk, measure consistency in quality control, and measure allocation of educational achievement. The tool displays calculation steps to aid understanding.

Standard deviation calculator, which inputs a set of data to calculate statistical data such as standard deviation, variance, mean, median, etc., supporting sample and population models.