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. 71.2, 71.026, 70.0, 71.4, 70.8, 70.8, 70.72, 70.0, 70.12, 71.374, 71.324, 71.28, 70.12, 70.102, 71.08, 71.16, 70.12, 70.060, 70.46, 70.944, 70.48, 71.68, 70.0, 71.2, 70.2, 70.692, 70.54, 70.80, 70.078, 70.00, 71.8, 70.438, 71.0, 71.8, 71.76, 70.876, 71.4, 70.22, 71.360, 70.932, 70.8, 70.80, 71.46, 71.4, 70.888, 70.0, 70.032, 71.48, 71.42, 70.2, 70.120, 70.10, 71.8, 70.4, 70.06, 71.4, 71.2, 70.566, 70.4, 71.98, 71.6, 71.410, 71.72, 71.556, 70.312

Statistics Computed From The Above Data Table Mathematical  Expression  Numerical  Evaluation  Data elements count 65 Data element index 1 to 65 th  indexed value of () within the data table 1 to 65 Sum of all given numerical data 4604.450000000001 Sum of All Data Arithmetic mean (average) of sample or population 70.837692307692 Arithmetic Mean  Sum of squares of all differences from the mean  23.464417846154 Sample variance 0.366631528846 Sample Variance Standard deviation within sample ± 0.605501056024 Sample Standard Deviation Population variance 0.360991043787 Population Variance Standard deviation within population ± 0.600825302219 Population Standard Deviation

PHP Math Tool by Jay Tanner - 2025