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. 100.24, 100.2, 98.00, 100.6, 100.2, 100.56, 98.2, 100.780, 100.2, 99.4, 97.184, 100.52, 98.076, 98.2, 100.08, 99.172, 100.88, 98.24, 99.4, 99.928, 99.392, 100.6, 100.36, 99.940, 99.12, 99.0, 100.668, 98.08, 99.172, 98.6

Statistics Computed From The Above Data Table Mathematical  Expression  Numerical  Evaluation  Data elements count 30 Data element index 1 to 30 th  indexed value of () within the data table 1 to 30 Sum of all given numerical data 2984.992 Sum of All Data Arithmetic mean (average) of sample or population 99.499733333333 Arithmetic Mean  Sum of squares of all differences from the mean  31.038269866667 Sample variance 1.070285167816 Sample Variance Standard deviation within sample ± 1.034545875163 Sample Standard Deviation Population variance 1.034608995556 Population Variance Standard deviation within population ± 1.017157311115 Population Standard Deviation

PHP Math Tool by Jay Tanner - 2025