The U.S. stock market has struggled for direction of late, but next week’s payroll report could confirm whether the recent weakness in data and stock prices is waning as the weather warms, or the start of a longer-term trend. U.S. data, including on economic growth, have been weak, but are seen as making the Federal Reserve less likely to raise interest rates soon, a view that has lifted market sentiment. “There are a lot of offsetting trends in the market, which is causing a lot of choppy volatility,” said Michael Mullaney, chief investment officer at Fiduciary Trust Co in Boston.