Ben Bernanke is seen leaving his Washington, D.C., office on Jan. 31, his last day as chairman of the Federal Reserve. Saul Loeb/AFP/Getty Images hide caption

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Janet Yellen during her confirmation hearing earlier this month. She's expected to win Senate approval to take over as head of the Federal Reserve. Brendan Smialowski /AFP/Getty Images hide caption

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Janet Yellen, President Obama's nominee to become the next chairman of the Federal Reserve Board, is sworn in Thursday on Capitol Hill for her confirmation hearing. Jacquelyn Martin/AP hide caption

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Federal Reserve Board Vice Chairman Janet Yellen is considered a top candidate to replace Ben Bernanke now that Lawrence Summers has withdrawn his name for contention for the Fed's top job. Robert Galbraith/Reuters/Landov hide caption

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Citing what he calls an "acrimonious" confirmation process, Lawrence Summers called President Obama to tell him of his decision not to seek the job of Federal Reserve Chairman Sunday. AFP/AFP/Getty Images hide caption

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Janet Yellen, vice chairwoman of the Federal Reserve, is under consideration to become the first woman to lead the Fed. President Obama reportedly is likely to choose between Yellen and former Treasury Secretary Lawrence Summers. Franck Robichon/EPA/Landov hide caption

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