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
42

Data index
1 to 42

Sum of all given data
16672.495924

Arithmetic mean of population or sample
396.96418866667

 Sum of squares of all differences from mean 
55.769639954942

Population variance
1.3278485703558

Population standard deviation
± 1.1523231189019

Sample variance
1.3602351208522

Sample standard deviation
± 1.1662911818462
 
Download this PHP 7 Program: 30.3 kb - Standard Deviation Calculator