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. 71.45, 70.680, 69.25, 69.20, 70.05, 68.5, 69.60, 69.710, 71.910, 69.5, 69.0, 69.275, 72.580, 69.0, 72.35, 70.5, 72.535, 72.5, 72.115, 69.15, 68.85, 72.755, 69.5, 71.75, 70.5, 68.635, 68.110, 72.0, 71.740, 71.65, 72.45, 70.0, 72.55, 68.45, 71.0, 70.120, 68.25, 71.545, 71.5, 72.0, 72.20, 71.0, 69.695, 69.40, 72.5, 71.025, 72.800, 71.015, 68.75, 71.35, 71.5, 69.75, 69.0, 68.0, 71.95, 68.50, 70.730, 70.645, 69.695, 71.95, 70.20, 70.460, 70.5, 68.0, 71.795, 72.480, 70.10, 68.0, 69.5, 71.55, 68.615, 69.60, 72.240

Statistics Computed From The Above Data Table Mathematical  Expression  Numerical  Evaluation  Data elements count 73 Data element index 1 to 73 th  indexed value of () within the data table 1 to 73 Sum of all given numerical data 5146.704999999999 Sum of All Data Arithmetic mean (average) of sample or population 70.502808219178 Arithmetic Mean  Sum of squares of all differences from the mean  151.505549315068 Sample variance 2.104243740487 Sample Variance Standard deviation within sample ± 1.450601165203 Sample Standard Deviation Population variance 2.075418483768 Population Variance Standard deviation within population ± 1.440631279602 Population Standard Deviation

PHP Math Tool by Jay Tanner - 2025