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. 13.537, 13.057, 13.5, 13.35, 13.38, 13.4, 13.21, 13.679, 13.074, 13.084, 13.89, 13.309, 13.320, 13.63, 13.86, 13.05, 13.3, 13.86, 13.572, 13.623, 13.1, 13.159, 13.8, 13.5, 13.253, 13.17, 13.410, 13.294, 13.5, 13.79, 13.49, 13.92, 13.98, 13.671, 13.0, 13.96, 13.8, 13.661, 13.69, 13.280, 13.4, 13.440, 13.341, 13.21, 13.286, 13.4, 13.96, 13.0, 13.8, 13.685, 13.53, 13.49, 13.556, 13.42, 13.0, 13.76, 13.8, 13.01, 13.6, 13.218, 13.60, 13.316, 13.17, 13.350, 13.774, 13.447, 13.73, 13.89, 13.8, 13.80, 13.9, 13.0, 13.198, 13.33, 13.3, 13.1, 13.5, 13.229, 13.1, 13.742, 13.461, 13.30, 13.641, 13.63, 13.48, 13.07, 13.315, 13.97, 13.82, 13.777, 13.698, 13.95, 13.0, 13.9, 13.57

Statistics Computed From The Above Data Table Mathematical  Expression  Numerical  Evaluation  Data elements count 95 Data element index 1 to 95 th  indexed value of () within the data table 1 to 95 Sum of all given numerical data 1280.877 Sum of All Data Arithmetic mean (average) of sample or population 13.482915789474 Arithmetic Mean  Sum of squares of all differences from the mean  7.743417326316 Sample variance 0.082376780067 Sample Variance Standard deviation within sample ± 0.287013553804 Sample Standard Deviation Population variance 0.081509656066 Population Variance Standard deviation within population ± 0.285498959834 Population Standard Deviation

PHP Math Tool by Jay Tanner - 2026