Wal-Mart...lost a bid to prevent 2 million current and former female workers from proceeding as a group with sex bias claims in the largest employment lawsuit in U.S. history... "Expert opinions, factual evidence, statistical evidence and anecdotal evidence present significant proof of a corporate policy of discrimination," the appeals court said... Wal-Mart said it will seek a rehearing of the decision by the appellate court. The court ``erred'' by not considering Wal-Mart's evidence, company attorney Ted Boutrous said at a press conference. [also refers to lawsuit against State Farm General Insurance]