statistic for improvement Of the various methods in plant improvement, Six Sigma is one of improvement by using statistical methods as the main tool to analyze and produce data that is the result of improvement. So, what is meant by statistics here. Statistics is a branch of mathematics devoted to learning about these data have been learned since elementary school. Because of the importance of statistical science is the statistical program is taught in every school curriculum from primary school to university faculty who become their own, because the breadth of knowledge learned. In applications in industry statistics are indispensable for the improvement process to improve quality and productivity. In general, the statistics are defined as follows: 1. The science That deals with the c ollection, classification, analysis, and interpretation of numerical facts and data 2. That language describes and analyze the physical variability of a process

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