Standard Deviation and Variance Statistics Calculator
Jay Tanner - 2025

Simply enter the delimited numerical data string/table 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.







Statistics Computed From The Above Data Table
Mathematical Expression Numerical Evaluation 

Data count
41

Data index
1 to 41

Sum of all given data
24163.109

Arithmetic mean of population or sample
589.34412195122

 Sum of squares of all differences from mean 
89.113475390245

Population variance
2.1734993997621

Population standard deviation
± 1.4742792814667

Sample variance
2.2278368847561

Sample standard deviation
± 1.4925940120328
 
Download this PHP 7 Program: 30.3 kb - Standard Deviation Calculator