The Federal Reserve raised its short-term interest rate target by a quarter of a percentage point for the sixth time, and signaled little change in its plan to continue raising rates gradually in the months ahead. The rate change, which was expected, brings the target for the federal-funds rate, charged on overnight loans between banks, to 2.5% from 2.25%. It was 1% last June. The statement accompanying the rate change was almost identical to that issued after its last meeting on Dec. 14. Economic growth is "moderate," the jobs market is improving "gradually," and inflation is "well contained." It said...