European stocks ended a volatile session almost flat Monday, as investors weighed disappointing Chinese data against a rally in oil prices. European shares had started in negative territory on Monday after data released over the weekend from China showed figures for industrial output, retail sales and fixed-asset income in April missed analyst expectations.

The Dow Jones Industrial Average slumped nearly 200 points and the broader market sank after Federal Reserve officials implied that interest rates could be raised as early as June. Atlanta Fed President Dennis Lockhart and San Francisco Fed President John Williams said the Fed's decision on whether to raise rates at the June 14-15 meeting hinges on the data.

Asian stocks fell for the first time in three days and the dollar strengthened against all of its major peers on prospects for a U.S. interest-rate hike. Japanese shares and the yen fluctuated as investors weighed whether better-than-expected economic growth reduces the need for stimulus.

Based on MarketWatch materials