TAR calculator

eDiscovery prevalence and sample results calculator

Estimate prevalence, confidence bounds, responsive volume, and review burden from an eDiscovery random sample.

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Prevalence Results workspace

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Prevalence Results

Estimate prevalence, confidence bounds, responsive volume, and review burden.

Prevalence = r / n; estimated responsive = N x prevalence; burden range = N x CI bounds x burden multipliers.

Use a random sample from the review population to estimate likely responsive volume before review planning.

Enter values to see calculator output.

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Use note

Educational and not legal advice.

Results are planning aids and can be wrong if inputs or assumptions are wrong. Users remain responsible for independent human and professional review.