For all the obsessing over central banks last week, in the end it was another week where oil played a key role in calling the shots for US equities. Commodity producers helped send the Standard & Poor’s 500 Index to the highest close of the year, as crude rallied 7.2 percent. Oil and equities have now risen for four straight weeks, the longest concerted advance since 2013. While Mario Draghi’s European Central Bank dominated headlines by adding to the stimulus that has underpinned the S&P 500’s seven-year bull market, evidence of stability in crude also helped. Central-bank commentary is set to dominate the week ahead. While traders are pricing in little chance the Federal Reserve will raise rates, they have boosted the odds for later in the year, with the June meeting now a 50-50 proposition. The Bank of Japan and the Bank of England also meet this week. Improving data from hiring to manufacturing have signaled the US economy can avoid a recession. “Just a month ago, everyone was convinced we were in a bear market, and now a month later we’re 10 percent higher and the sun is coming back out,’’ John Canally, chief economic strategist at LPL Financial Corp. in Boston, said Friday. “Another round of data has to confirm how far we’ve come, and the Fed is going to be the key test next week by far.’’