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. 102.0, 103.5, 102.45, 101.75, 99.005, 102.55, 103.20, 102.90, 101.25, 103.615, 101.5, 103.470, 103.5, 99.0, 102.70, 103.680, 101.5, 100.20, 99.5, 102.75, 103.730, 99.0, 99.5, 99.60, 103.155, 99.510, 102.5, 101.850, 100.40, 102.95, 100.825, 100.20, 102.80, 99.390, 99.085, 103.95, 100.75, 101.0, 100.695, 102.5, 101.30, 102.0, 102.975, 102.95, 100.0, 103.350, 100.0, 102.5, 103.0, 103.295, 103.5, 99.00, 101.5, 102.0, 101.00, 101.0, 103.150, 103.260, 102.195, 101.95, 100.575, 100.0, 103.70, 102.45, 100.10, 101.45, 103.95, 103.95, 99.35, 102.735, 102.5, 99.975, 101.5, 101.95, 100.85, 99.0, 103.65, 100.5, 99.690, 102.385, 101.0, 102.0, 102.460, 99.65, 99.65, 102.5, 103.65, 101.370, 100.0, 102.25, 103.0, 102.5

Statistics Computed From The Above Data Table Mathematical  Expression  Numerical  Evaluation  Data elements count 92 Data element index 1 to 92 th  indexed value of () within the data table 1 to 92 Sum of all given numerical data 9353.624999999998 Sum of All Data Arithmetic mean (average) of sample or population 101.669836956522 Arithmetic Mean  Sum of squares of all differences from the mean  204.682922554348 Sample variance 2.249262885213 Sample Variance Standard deviation within sample ± 1.499754274944 Sample Standard Deviation Population variance 2.224814375591 Population Variance Standard deviation within population ± 1.491581166276 Population Standard Deviation

PHP Math Tool by Jay Tanner - 2025