1. What is Six Sigma? There is a business notion related to this aspect of achieving quality called Six Sigma. Bruce (2002), defined it as “One term used is statistics to represent standard deviation, an indicator of the degree of variation in a set of measurements or a process.” (p. 182) It cannot be immediately said which organizations in the industrial laundry sector follow Six Sigma, but it can be inferred that most of them adopt the technique. In Sex Sigma, the general rule is that the defect or error made in a product or service must not exceed a standard deviation of 3.4. That's 3.4 defects per million opportunities. (Bruce, 2002, p. 2) Six Sigma is a set of tools, processes and techniques that help improve any business process. It has the ideal goal of perfecting processes that can make it more efficient and effective. You need to follow a disciplined and systematic approach to achieve the desired efficiency and effectiveness. Six Sigma relies heavily on data available within the organization; therefore, it is important that this data is stored correctly and can therefore be accessed quickly and efficiently by group members. Six Sigma also seeks to eliminate any flaws in the process or system, as it comes with six standard deviations (hence the term six sigma) right between the mean and the desired value. The Six Sigma process can be applied in almost any process, from manufacturing to transactional. Furthermore, it does not matter whether the company offers a product or a service. The concept of Lean Six Sigma can be exemplified by creating a table. For example, the processes needed to make a table, such as cutting wood into pieces, shaping the wood pieces, performing sanding assembly... half of the paper... it should be noted that the process of Lean management has been applied for the first time in the manufacturing sector. Some analysts argue that its particular business management process derives from the Toyota company's automobile production system. It should be noted that the Japanese are very keen to adopt anything that reduces costs and eliminates waste. It is therefore no wonder that the Japanese are known for their simplicity, design and minimalist vision of things. However, nowadays it has evolved from the manufacturing sector and could now be applied to the management sector. Before moving on to the essential principles of Lean Management, it would be best to define them clearly. Bradley's aforementioned book doesn't really provide a definitive and concise definition of Lean. Instead, he tried to define this concept of business management through examples.