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
34

Data index
1 to 34

Sum of all given data
21294.335

Arithmetic mean of population or sample
626.30397058824

 Sum of squares of all differences from mean 
93.965288970588

Population variance
2.7636849697232

Population standard deviation
± 1.6624334482087

Sample variance
2.8474329991087

Sample standard deviation
± 1.6874338502912
 
Download this PHP 7 Program: 30.3 kb - Standard Deviation Calculator