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
48

Data index
1 to 48

Sum of all given data
32499.132

Arithmetic mean of population or sample
677.06525

 Sum of squares of all differences from mean 
18.449621

Population variance
0.38436710416666

Population standard deviation
± 0.61997347053455

Sample variance
0.39254512765956

Sample standard deviation
± 0.62653421906514
 
Download this PHP 7 Program: 30.3 kb - Standard Deviation Calculator