Binomial Calculator / Binomial Estimation


A statistical method used to calculate Confidence Intervals, based on the Binomial Distribution, that models the random selection of Documents from a large Population. Binomial Estimation is generally more accurate, but less well known, than Gaussian Estimate. A Binomial Estimate is substantially better than a Gaussian Estimate (which, in contrast, relies on the Gaussian or Normal Distribution) when there are few (or no) Relevant Documents in the Sample. When there are many Relevant and many Non-Relevant documents in the Sample, Binomial and Gaussian Estimates are nearly identical. 1


  1. Maura R. Grossman and Gordon V. Cormack, EDRM page & The Grossman-Cormack Glossary of Technology-Assisted Review, with Foreword by John M. Facciola, U.S. Magistrate Judge2013 Fed. Cts. L. Rev. 7 (January 2013).