It's a quality assurance truism that you can't inspect quality into a product. For a statistician, the difference between three sigma and six sigma is a difference in the degree of deviation from a ...

Despite the methodology’s quick and sweeping effect on major corporations across the globe, Six Sigma isn’t an idea that sprung up out of nowhere. It represents decades–centuries, even–of innovation ...

It's a question that arises with virtually every major new finding in science or medicine: What makes a result reliable enough to be taken seriously? The answer has to do with statistical significance ...

SIX SIGMA HAS BEEN TOUTED AS a powerful quality improvement method that boosts employee job satisfaction and increases profits. Although many shops striving to improve operations and profits have ...