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. 503.25, 505.861, 505.179, 503.501, 503.965, 505.196, 501.21, 505.416, 501.482, 505.564, 500.541, 504.192, 500.01, 504.429, 502.529, 500.52, 500.784, 503.06, 505.709, 503.463, 504.281, 502.593, 504.144, 502.039, 505.753, 501.719, 501.265, 502.169, 504.839, 504.807, 505.933, 503.61, 502.535 Statistics Computed From The Data Given Above Mathematical Expression  Numerical Evaluation  Data count 33 Data index 1 to 33 Sum of all given data 16611.548 Arithmetic mean of population or sample 503.38024242424  Sum of squares of all differences from mean  102.23563806061 Population variance 3.0980496382002 Population standard deviation ± 1.7601277334899 Sample variance 3.1948636893939 Sample standard deviation ± 1.7874181629921 Program by Jay Tanner - 2025 - v2.21