Variance and Standard Deviation Statistics Calculator PHP Program by Jay Tanner

Simply enter the delimited numerical data table/string and click [COMPUTE]. The numerical data elements can be separated by commas, spaces or semicolons. The initial example data is randomly generated.  Copy/Paste/Replace with your own data table. 81.04, 82.2, 82.2, 82.8, 81.828, 81.14, 81.650, 82.4, 81.22, 81.292, 82.58, 82.36, 81.374, 82.472, 82.80, 82.94, 82.8, 81.04, 81.124, 82.032, 82.52, 81.8, 81.0, 81.906, 82.00, 82.224, 82.56, 82.400, 82.4, 82.120, 82.592, 82.60, 81.8, 82.6, 81.596, 82.412, 81.750, 82.310, 81.998, 82.672

Statistics Computed From The Above Data Table Mathematical  Expression  Numerical  Evaluation  Data elements count 40 Data element index 1 to 40 th  indexed value of () within the data table 1 to 40 Sum of all given numerical data 3282.552 Sum of All Data Arithmetic mean (average) of sample or population 82.0638 Arithmetic Mean  Sum of squares of all differences from the mean  12.6454144 Sample variance 0.324241394872 Sample Variance Standard deviation within sample ± 0.56942198313 Sample Standard Deviation Population variance 0.31613536 Population Variance Standard deviation within population ± 0.562259157329 Population Standard Deviation

PHP Math Tool by Jay Tanner - 2026