A Coors beer sign in a Chicago bar. Molson Coors is one of four stocks singled out here as looking good on an indicator devised by the late market analyst Geraldine Weiss. (Photo by Scott Olson/Getty Images)Getty ImagesWhen a stock sports a dividend yield above its own historical average, one of two things has happened. The company may have raised its dividend – usually a good sign. Or, the dividend yield may have gone up because the stock’s price went down. That suggests there’s been bad news, but it hints ...