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. 500.5, 504.2, 503.9, 502.3, 503.4, 501, 501.6, 503.6, 504.5, 503.8, 502.6, 501.8, 500.2, 505.6, 504, 501.4, 503.6, 503.6, 503.8 Statistics Computed From The Data Given Above Mathematical Expression  Numerical Evaluation  Data count 19 Data index 1 to 19 Sum of all given data 9555.4 Arithmetic mean of population or sample 502.91578947368  Sum of squares of all differences from mean  39.345263157895 Population variance 2.0708033240997 Population standard deviation ± 1.4390286043369 Sample variance 2.1858479532164 Sample standard deviation ± 1.4784613465412 Program by Jay Tanner - 2025 - v2.21