Standard Deviation and Variance Statistics Calculator v2.1 - Jay Tanner - 2026

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. 818.64, 951.73, 782.11, 819.26, 935.73, 503.3, 957.27, 512.76, 581.63, 889.7, 704.28, 692.63, 841.46, 978.9, 914.75, 710.59, 966.03, 853, 998.99, 555.06, 741.02, 909.2, 733.45, 546.3, 523.79, 571.29, 844.09, 560.79, 725.78, 877.69 Statistics Computed From The Data Given Above Mathematical Expression  Numerical Evaluation  Data count 30 Data index 1 to 30 Sum of all given data 23001.22 Arithmetic mean of population or sample 766.70733333333  Sum of squares of all differences from mean  749284.00278667 Population variance 24976.133426222 Population standard deviation ± 158.03839225398 Sample variance 25837.379406437 Sample standard deviation ± 160.7400989375