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Would your server give you a good grade on your gratuity? Matt Schultz is with CreditCards.com and says our tipping tendencies in restaurants come down to income: "The more money you have, the more likely to leave on the table at the end of the night."
Republican baby boomer men in the northeast leave the biggest tip. Credit and debit card users surveyed leave an average of 20 percent at restaurants. And nearly 20 percent of those polled said sometimes they don't leave the server a tip at all.
In New York, Tonya J. Powers, FOX News.
