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. 82.98, 81.555, 81.69, 82.488, 81.951, 81.60, 81.99, 82.083, 82.473, 83.010, 82.386, 81.399, 81.3, 82.83, 81.33, 81.72, 81.0, 81.060, 82.194, 82.467, 83.4, 82.62, 83.430, 81.30, 83.517, 83.49, 82.5, 83.4, 81.237, 81.3, 82.98, 83.331

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Statistics Computed From The Above Data Table Mathematical  Expression  Numerical  Evaluation  Data elements count 32 Data element index 1 to 32 th  indexed value of () within the data table 1 to 32 Sum of all given numerical data 2632.011 Sum of All Data Arithmetic mean (average) of sample or population 82.25034375 Arithmetic Mean  Sum of squares of all differences from the mean  20.67092521875 Sample variance 0.666804039315 Sample Variance Standard deviation within sample ± 0.816580699818 Sample Standard Deviation Population variance 0.645966413086 Population Variance Standard deviation within population ± 0.803720357516 Population Standard Deviation

PHP Math Tool by Jay Tanner - 2026