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. 19.2, 18.64, 19.2, 18.8, 18.0, 19.2, 18.644, 18.656, 19.06, 19.2, 18.406, 18.60, 18.82, 18.56, 18.938, 18.34, 18.6, 18.74, 19.52, 19.2, 19.8, 19.44, 19.568, 18.2, 18.552, 18.2, 18.058, 18.4, 18.02, 19.238, 18.04, 19.4, 18.06, 19.688, 18.38, 19.336, 19.72, 18.62, 19.44, 18.816, 19.794, 18.54, 19.2, 18.4, 19.4, 19.2, 19.696, 18.6, 19.694, 18.94, 18.0, 19.48, 18.856, 19.502, 19.864, 19.18, 19.0, 18.8, 18.54, 18.254, 18.598, 19.06, 18.898, 19.52, 18.4, 19.0, 18.312, 19.314, 19.64, 18.0, 18.164, 19.786, 19.6, 19.2, 18.100, 19.4

Statistics Computed From The Above Data Table Mathematical  Expression  Numerical  Evaluation  Data elements count 76 Data element index 1 to 76 th  indexed value of () within the data table 1 to 76 Sum of all given numerical data 1437.232 Sum of All Data Arithmetic mean (average) of sample or population 18.910947368421 Arithmetic Mean  Sum of squares of all differences from the mean  22.555355789474 Sample variance 0.300738077193 Sample Variance Standard deviation within sample ± 0.548395912816 Sample Standard Deviation Population variance 0.29678099723 Population Variance Standard deviation within population ± 0.544776098255 Population Standard Deviation

PHP Math Tool by Jay Tanner - 2025