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. 40.7, 40.1, 40.087, 40.536, 40.0, 40.3, 40.0, 40.899, 40.8, 40.502, 40.9, 40.8, 40.8, 40.66, 40.96, 40.106, 40.4, 40.48, 40.66, 40.7, 40.16, 40.008, 40.8, 40.976, 40.0, 40.521, 40.510, 40.1, 40.348, 40.13, 40.249, 40.62, 40.9, 40.8, 40.249, 40.3, 40.16, 40.09, 40.534, 40.78, 40.40, 40.2, 40.0, 40.046, 40.871, 40.59, 40.39, 40.12, 40.8, 40.77, 40.9, 40.0, 40.0, 40.6, 40.932, 40.916, 40.6, 40.910, 40.0, 40.80, 40.43, 40.9, 40.98, 40.11, 40.3, 40.8, 40.68

Statistics Computed From The Above Data Table Mathematical  Expression  Numerical  Evaluation  Data elements count 67 Data element index 1 to 67 th  indexed value of () within the data table 1 to 67 Sum of all given numerical data 2712.67 Sum of All Data Arithmetic mean (average) of sample or population 40.487611940299 Arithmetic Mean  Sum of squares of all differences from the mean  7.276503910448 Sample variance 0.110250059249 Sample Variance Standard deviation within sample ± 0.332039243538 Sample Standard Deviation Population variance 0.108604535977 Population Variance Standard deviation within population ± 0.329552023172 Population Standard Deviation

PHP Math Tool by Jay Tanner - 2025