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. 67.2, 67.176, 68.22, 69.246, 67.182, 66.0, 70.2, 66.6, 71.10, 66.84, 67.680, 69.84, 71.34, 71.28, 67.02, 71.46, 70.86, 67.8, 69.006, 71.202, 66.960, 70.08, 71.88, 66.600, 70.8, 68.94, 69.00, 70.8, 70.2, 66.240, 69.30, 66.510, 69.6, 71.70, 71.4, 70.8, 68.100, 67.8, 69.0, 67.38, 67.2, 70.02, 71.34, 67.2, 68.4, 70.2, 67.212, 68.40, 69.030, 71.4, 67.212, 69.780, 70.320, 67.26, 70.686, 67.08, 69.528, 67.2, 67.578, 67.56, 69.0, 67.56, 68.052, 70.2, 67.86, 67.434, 67.932, 70.20, 71.010, 67.2, 66.6, 67.056, 67.44, 67.8, 67.890, 71.94, 70.8, 67.74, 67.452, 71.4, 71.22, 70.8, 69.0, 68.592, 69.6, 70.32, 69.54, 68.4, 67.2, 69.6, 68.4, 70.2, 71.406, 66.666

Statistics Computed From The Above Data Table Mathematical  Expression  Numerical  Evaluation  Data elements count 94 Data element index 1 to 94 th  indexed value of () within the data table 1 to 94 Sum of all given numerical data 6478.458 Sum of All Data Arithmetic mean (average) of sample or population 68.919765957447 Arithmetic Mean  Sum of squares of all differences from the mean  259.647262851064 Sample variance 2.791906052162 Sample Variance Standard deviation within sample ± 1.670899773225 Sample Standard Deviation Population variance 2.762204923947 Population Variance Standard deviation within population ± 1.661988244227 Population Standard Deviation

PHP Math Tool by Jay Tanner - 2025