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Sum of Squares Calculator

Paste numeric observations to calculate the mean, count, and total sum of squared deviations used by variance and standard-deviation formulas.

Sum of squared deviations from the mean
Mean
Count
SS = Σ(x − mean)²
Variance divides this total by n for a population or by n−1 for a sample.

Connected statistics workflow

v10.85 connects descriptive statistics, probability models, distributions, confidence intervals, sample-size planning, hypothesis tests, correlation/regression, rank-based methods, and counting tools without replacing the established historical engines.

Interpret statistical results in context

Use plots and descriptive summaries before formal tests. Check the sampling/design assumptions that matter for the chosen method, report effect size and uncertainty where available, and avoid treating a threshold such as p < .05 as proof of importance, causation, or truth. Browser calculations are educational/planning utilities, not domain-specific professional advice.

How to use this Sum of Squares Calculator

Paste numeric observations to calculate the mean, count, and total sum of squared deviations used by variance and standard-deviation formulas.

What this tool calculates

Calculate the sum of squared deviations from a dataset mean.

Practical limits

This calculator summarizes the values you enter and does not infer whether the data are a representative sample or whether any observation should be excluded.

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