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. 66.50, 67.45, 64.50, 65.85, 65.5, 64.45, 66.705, 63.420, 67.5, 64.940, 63.45, 66.45, 66.490, 64.0, 64.5, 63.90, 64.80, 65.35, 65.30, 67.565, 66.135, 65.85, 65.15, 63.715, 64.95, 66.10, 63.0, 63.0, 66.5, 64.725, 66.5, 65.0, 64.55, 63.5, 67.835, 67.60, 67.5, 67.5, 67.5, 66.5, 66.5, 66.0, 66.45, 66.175, 64.70, 64.0, 67.75, 65.660, 63.30, 63.55, 63.5, 63.315, 64.0, 63.85, 67.5, 65.30, 67.0, 67.15, 67.250, 65.160, 66.075, 63.15, 65.50, 63.470, 63.885, 66.10, 63.5, 65.450, 67.255, 63.0, 66.620, 66.5, 65.0, 67.175, 66.0

Statistics Computed From The Above Data Table Mathematical  Expression  Numerical  Evaluation  Data elements count 75 Data element index 1 to 75 th  indexed value of () within the data table 1 to 75 Sum of all given numerical data 4908.520000000001 Sum of All Data Arithmetic mean (average) of sample or population 65.446933333333 Arithmetic Mean  Sum of squares of all differences from the mean  158.233294666667 Sample variance 2.138287765766 Sample Variance Standard deviation within sample ± 1.462288537111 Sample Standard Deviation Population variance 2.109777262222 Population Variance Standard deviation within population ± 1.452507233105 Population Standard Deviation

PHP Math Tool by Jay Tanner - 2025