Variance and Standard Deviation Statistics Calculator

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
34

Data element index
1 to 34

th  indexed value of () within the data table
1 to 34

Sum of all given numerical data
3363.384
Sum of All Data

Arithmetic mean (average) of sample or population
98.923058823529
Arithmetic Mean

 Sum of squares of all differences from the mean 
44.018657882353

Sample variance
1.333898723708
Sample Variance

Standard deviation within sample
± 1.154945333645
Sample Standard Deviation

Population variance
1.294666408304
Population Variance

Standard deviation within population
± 1.137834086457
Population Standard Deviation
PHP Math Tool by Jay Tanner - 2022