There, Larry explains to his dejected friend that Six Sigma is the reason the pizza division has thrived while the burger division has been sluggish-and why Larry's career has taken off while Joe's has come to an untimely end. Their ensuing conversation is the book. It's not a rah-rah 'Do Better' program. It establishes a measurable status to achieve, and embodies a strategic problem-solving method to increase customer satisfaction and dramatically enhance the bottom line. It teaches your employees how to improve the way they do business, scientifically and fundamentally, and maintain their new performance level.
Sigma is a Greek letter used to designate a standard deviation.
In business terms it measures the capability of any given process to perform defect-free work. The higher the sigma value, the less likely that a process will produce defects. Six is the level of perfection that a Six Sigma company aims to achieve. Most companies operate between Three and Four Sigma, which means they make between approximately 67,000 and 6,000 mistakes per million chances, respectively. To most people, that sounds good.