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. 30.5, 30.0, 29.600, 33.5, 31.835, 31.040, 33.5, 33.90, 30.130, 33.5, 30.895, 32.0, 33.885, 33.5, 29.695, 32.80, 30.5, 32.200, 33.25, 30.5, 30.5, 29.0, 33.900, 30.0, 29.55, 31.0, 33.5, 29.0, 30.5, 32.0, 31.65, 33.595, 32.5, 33.90, 33.20, 32.5, 30.085, 32.880, 29.85, 30.510, 32.595, 29.0, 30.980, 30.40, 33.0, 33.75, 30.220, 33.5, 31.225, 30.060, 32.5, 32.115

Statistics Computed From The Above Data Table Mathematical  Expression  Numerical  Evaluation  Data elements count 52 Data element index 1 to 52 th  indexed value of () within the data table 1 to 52 Sum of all given numerical data 1645.695 Sum of All Data Arithmetic mean (average) of sample or population 31.647980769231 Arithmetic Mean  Sum of squares of all differences from the mean  125.377812980769 Sample variance 2.458388489819 Sample Variance Standard deviation within sample ± 1.567924899292 Sample Standard Deviation Population variance 2.411111788092 Population Variance Standard deviation within population ± 1.552775511171 Population Standard Deviation

PHP Math Tool by Jay Tanner - 2025