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
46

Data index
1 to 46

Sum of all given data
34461.08926

Arithmetic mean of population or sample
749.15411434783

 Sum of squares of all differences from mean 
77.168260508179

Population variance
1.6775708806126

Population standard deviation
± 1.2952107475668

Sample variance
1.7148502335151

Sample standard deviation
± 1.3095229030128
 
Download this PHP 7 Program: 30.3 kb - Standard Deviation Calculator