By James Ramage 

The dollar fell against major currencies Tuesday, although its losses were less severe after moderately stronger second-tier data showed a U.S. economy emerging from its winter doldrums.

The National Association of Realtors reported existing-home sales fell 0.2% in March from one month earlier, compared with economists' expectations they would fall by 0.7%. At the same time, the Federal Reserve Bank of Richmond's survey on manufacturing showed the central Atlantic region experienced an uptick in activity in April from the previous month.

The Federal Reserve has used unemployment, inflation and other data as gauges for assessing how quickly the U.S. economy is improving, and how soon it can wind down its stimulus program and eventually raise interest rates from near zero. Dollar investors are eager to see higher interest rates, which would enhance returns on dollar-denominated assets and increase demand for the greenback.

The dollar clawed its way to trade flat against the yen at ¥102.62, versus ¥102.47 before the reports. The greenback was trading at $1.3816 against the euro before the data and was down 0.1% at $1.3804 in late trade.

Although it has strengthened incrementally against the yen and the euro since April 10, the dollar continues to struggle to break away from weaker trading ranges against major currencies. Investors haven't shown a commitment to betting the Federal Reserve will raise interest rates sooner than mid-2015, which would boost the dollar.

"The Fed's guidance right now means more than the slightly positive data," said Robert Lynch, currency strategist at HSBC. "The Fed providing guidance that it wants to keep monetary policy accommodative, and interest rates low, would help explain why the dollar is weaker against at least some currencies."

The Australian and New Zealand dollars both gained 0.4% against the greenback after investors positioned themselves for expected interest-rate moves. The Aussie increased to $0.9365, while the kiwi rose to $0.8598.

On Wednesday, Australia will report inflation numbers for the first quarter, which many forecast to rise above the Reserve Bank of Australia's target band of 2% to 3%. Mr. Lynch said a high number could pressure the central bank to cast aside its neutral monetary policy stance and raise interest rates in a shorter time frame than previously expected.

Australia's key interest rate is at a record low of 2.5%.

Investors also anticipate New Zealand's central bank on Thursday could raise its benchmark interest rate by a quarter of a percentage point for a second time since March, to 3%. Much, but not all, of the expected rise has already been priced into the market, strategists said.

Write to James Ramageat james.ramage@wsj.com