17. A method according to claim 16 , further comprising: calculating a number of unclassified documents for inclusion in the sample in accordance with the equation: M = x b where b is an upper bound value representing a percentage of the unclassified documents remaining in the corpus that are responsive and x is an integer that is determined based on a desired confidence level that all the responsive documents are identified.
16. A method according to claim 10 , further comprising: selecting a sample of the unclassified documents remaining in the corpus; analyzing the selected unclassified documents for responsive text; and transmitting further unclassified documents from the corpus to the user for review when at least one of the selected unclassified documents includes responsive text.