U.S. stocks choppy in early trade on mixed economic data

The data left investor's with mixed thoughts about the strength of the economy's recovery and, ultimately, when the Federal Reserve will raise interest rates. Boston Fed President Eric Rosengren said Monday that he would like to begin raising rates as soon as possible, but risks from the slowdown in China and Europe in particular loom large even as growth at home is still not strong enough. At 10:17 a.m. ET the Dow Jones industrial average was down 9.71 points, or 0.05 percent, at 18,0