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. 20.512, 21.112, 18.08, 20.396, 19.348, 18.92, 20.4, 19.40, 18.0, 19.184, 19.84, 20.4, 20.0, 19.84, 20.0, 20.72, 20.52, 18.12, 20.04, 21.52, 18.28, 19.364, 21.2, 18.248, 18.4, 21.2, 21.956, 18.508, 20.8, 21.172, 20.132, 19.32, 20.8, 19.00, 19.36, 21.036, 20.4, 20.400, 21.6, 20.492, 18.8, 20.32, 18.4, 18.468, 19.828, 21.6, 19.6, 20.40, 18.0, 21.060, 19.2, 21.68, 19.068, 19.2, 20.16, 20.600, 21.716, 20.0, 18.96, 20.004, 19.756, 18.8, 19.388, 19.6, 19.60, 18.860, 18.0, 20.8, 18.4, 20.380, 20.692, 19.6, 21.2, 18.48, 18.940, 19.2, 20.820, 18.48, 20.8, 19.596, 18.4, 21.284, 20.280, 19.6, 19.2, 19.296, 18.28, 20.800, 20.724, 20.52, 20.76, 19.2, 18.4, 19.76, 19.2, 19.68, 19.736, 18.548

Statistics Computed From The Above Data Table Mathematical  Expression  Numerical  Evaluation  Data elements count 98 Data element index 1 to 98 th  indexed value of () within the data table 1 to 98 Sum of all given numerical data 1940.144 Sum of All Data Arithmetic mean (average) of sample or population 19.797387755102 Arithmetic Mean  Sum of squares of all differences from the mean  102.979075265306 Sample variance 1.061639951189 Sample Variance Standard deviation within sample ± 1.030359136995 Sample Standard Deviation Population variance 1.050806890462 Population Variance Standard deviation within population ± 1.025088723215 Population Standard Deviation

PHP Math Tool by Jay Tanner - 2026