Standard Deviation and Variance Statistics Calculator

Simply enter the delimited numerical data string/table and click [COMPUTE]. The numerical data elements can be separated by commas, spaces or semicolons. The initial example data is randomly generated.  Replace with your own data table. 504.1961, 505.8366, 501.8685, 505.8606, 500.7171, 500.2381, 504.6092, 504.2751, 504.9307, 501.4234, 504.4017, 501.8655, 505.737, 505.0609, 501.6955, 505.4041, 504.5766, 505.4829, 500.1383, 504.4911, 501.8047, 501.7563, 502.0398, 500.4935, 504.9691, 505.1177, 505.7329, 500.903, 504.3148, 500.2371, 502.8297, 503.9346, 504.8817, 500.6176, 502.6018, 505.8543, 504.6987 Statistics Computed From The Data Given Above Mathematical Expression  Numerical Evaluation  Data count 37 Data index 1 to 37 Sum of all given data 18625.5963 Arithmetic mean of population or sample 503.39449459459  Sum of squares of all differences from mean  139.06624107892 Population variance 3.758547056187 Population standard deviation ± 1.9386972574868 Sample variance 3.8629511410811 Sample standard deviation ± 1.9654391725721 Program by Jay Tanner - 2025 - v2.21