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. 19.1, 18.056, 17.6, 18.89, 18.05, 17.63, 17.00, 19.1, 18.2, 17.54, 17.636, 17.84, 18.2, 19.079, 19.52, 18.494, 17.0, 18.737, 18.47, 17.6, 17.9, 18.17, 19.427, 18.257, 18.74, 18.56, 17.516, 19.58, 19.73, 19.1, 17.273, 18.485, 19.46, 17.912, 18.8, 18.689, 17.33, 19.514, 17.3, 19.61, 18.5, 19.34, 18.23, 17.9, 17.6, 19.784, 19.16, 17.06, 17.711, 17.306

Statistics Computed From The Above Data Table Mathematical  Expression  Numerical  Evaluation  Data elements count 50 Data element index 1 to 50 th  indexed value of () within the data table 1 to 50 Sum of all given numerical data 917.686 Sum of All Data Arithmetic mean (average) of sample or population 18.35372 Arithmetic Mean  Sum of squares of all differences from the mean  32.37374808 Sample variance 0.660688736327 Sample Variance Standard deviation within sample ± 0.812827617842 Sample Standard Deviation Population variance 0.6474749616 Population Variance Standard deviation within population ± 0.804658288716 Population Standard Deviation

PHP Math Tool by Jay Tanner - 2025