US STOCKS-Wall St set to open higher as oil surges
* Oil prices up more than 3 pct
* Yellen says economy on "solid course"
* Futures up: Dow 100 pts, S&P 13.75 pts, Nasdaq 30.5 pts (Adds details, comment, updates prices)
By Yashaswini Swamynathan and Abhiram Nandakumar
April 8 (Reuters) - Wall Street was set to open higher on Friday, helped by a surge in crude oil and Federal Reserve Chair Janet Yellen's comments pointing to resilience in the U.S. economy.
Crude rose more than 3 percent on fresh hopes of top producers agreeing to freeze output, and economic indicators in the United States and Europe lifted sentiment for higher demand.
Yellen, in a rare appearance with former Fed chairmen on Thursday, said the U.S. economy was on a solid course with some hints of inflation, putting the central bank on track for a gradual increase in interest rates this year.
New York Fed President William Dudley said a "cautious, gradual approach" to rate hikes was appropriate.
U.S. stocks have been volatile through the week, with the S&P 500 down 1.5 percent as investors fretted over a cloudy outlook on rates and signs of weakness in the global economy. Continuación...