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. 72.30, 72.0, 73.5, 69.75, 69.5, 71.150, 69.195, 72.490, 72.0, 71.5, 72.290, 71.000, 69.70, 70.20, 69.90, 70.490, 73.090, 71.5, 69.020, 72.45, 70.345, 73.5, 72.5, 69.775, 69.0, 73.0, 70.890, 70.890, 70.15, 70.0, 73.0, 69.0, 72.195, 72.605, 69.5, 73.415, 73.5, 71.515, 73.85, 70.535, 70.5, 71.250, 70.0, 73.15, 69.535, 70.575, 72.55, 71.0, 69.0, 71.40, 69.0, 69.440, 72.0, 71.170, 69.5

Statistics Computed From The Above Data Table Mathematical  Expression  Numerical  Evaluation  Data elements count 55 Data element index 1 to 55 th  indexed value of () within the data table 1 to 55 Sum of all given numerical data 3912.26 Sum of All Data Arithmetic mean (average) of sample or population 71.132 Arithmetic Mean  Sum of squares of all differences from the mean  114.30343 Sample variance 2.116730185185 Sample Variance Standard deviation within sample ± 1.45489868554 Sample Standard Deviation Population variance 2.078244181818 Population Variance Standard deviation within population ± 1.441611661238 Population Standard Deviation

PHP Math Tool by Jay Tanner - 2025