Variance and Standard Deviation Statistics Calculator
PHP Program by Jay Tanner

Simply enter the delimited numerical data table/string 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 table.






Statistics Computed From The Above Data Table
Mathematical  Expression Numerical  Evaluation 

Data elements count
74

Data element index
1 to 74

th  indexed value of () within the data table
1 to 74

Sum of all given numerical data
6949.536
Sum of All Data

Arithmetic mean (average) of sample or population
93.912648648649
Arithmetic Mean

 Sum of squares of all differences from the mean 
21.172496864865

Sample variance
0.290034203628
Sample Variance

Standard deviation within sample
± 0.538548237049
Sample Standard Deviation

Population variance
0.286114822498
Population Variance

Standard deviation within population
± 0.534897020461
Population Standard Deviation
PHP Math Tool by Jay Tanner - 2024