Numerous Sigma Level Tables Need Correction: Commonly Used Tables Ignore Permitted “Left-Side” Defects

INFORMS Transactions on Education

David Weltman¹  Morgan Swink¹ 

[1] M. J. Neeley School of Business, Texas Christian University, Fort Worth, Texas 76129

关键词: Six Sigma;    DPMO;    quality;    teaching operations management;    teaching supply chain management;   

DOI  :  10.1287/ited.2015.0143

学科分类：社会科学、人文和艺术（综合）

来源: INFORMS

【 摘 要 】

Many popular textbooks in the fields of operations management and quality contain process sigma level tables that are slightly inaccurate and inconsistent among each other. These discrepancies annoy and are confusing to fastidious educators and students and could lead to minor estimation errors in practice. We document instances of the error and provide explanation, calculations, and an accurate sigma level table.

【 授权许可】

CC BY