Sum of Squares Calculator

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Statistical SS (deviations from the mean) is used for variance, standard deviation, ANOVA, and regression. Algebraic SS is the raw sum of each value squared.
Enter numbers separated by commas or spaces. At least 2 values required for statistical mode.
Sum of Squares
93.2

The computed sum of squares in the selected mode

Count (n)5
Mean5.4
Sample Variance23.3
Sample Std Dev4.827
Sum of Squares93.2
Sample Variance23.3

Sum of Squares: 93.2

  • With 5 values and a mean of 5.4, the sum of squared deviations is 93.2.
  • The sample variance is SS / (n - 1) = 93.2 / 4 = 23.3.
  • The sample standard deviation is the square root of that: 4.827.
  • This SS value feeds directly into variance, standard deviation, t-tests, ANOVA, and regression calculations.

Next stepDivide this SS by (n - 1) to get the sample variance, or by n for the population variance. In ANOVA, further break it into SS Between and SS Within.

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