Process Selection for Linear Profiles with One‐sided Specifications Based on the Ratio Test Statistic

Qual. Reliab. Engng. Int.

2014

Self Cite

When the quality of a process is represented by a relationship between one response variable and one or more independent variables called a multiple linear profile with in statistical control, the process capability analysis is widely used to measure the capability of the process to manufactured item within the required tolerance. In this paper, we propose the difference test statistic to compare two processes for multiple linear profiles with one-sided specifications. The number of profiles required for a designated selection power and confidence level is also provided. The performance of the proposed method is assessed using simulation study. The results provide useful information to practitioners. A real data from the logistic service shows that our method performs well in the application. Process yield indices for multiple linear profiles with one-sided specificationsA multiple linear profile is usually defined by a linear regression model. When the process is in statistical control, the relationship between the response variable and the two independent variables is modeled as

Section: Discussionmentioning

confidence: 99%

“…Wang et al . proposed a method based on the ratio test statistic R that is the quotient of two independent, normally distributed random variables and is related to the Cauchy distribution.…”

Section: Selection Methodsmentioning

confidence: 99%

Supplier Selection for Multiple Linear Profiles with One-Sided Specifications

Qual. Reliab. Engng. Int.

2014

Self Cite

“…A ratio test statistic was used to select a supplier in Ref. [6]. This article assesses the yield indices of two processes with one-sided specification limits for linear profiles by using the ratio statistic in acceptance sampling plans.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Two Process Yields in Acceptance Sampling Plans

Butt

Aslam

Journal of Testing and Evaluation

et al. 2018

Competitive activities always support improvement in quality. In this study, a repetitive group sampling plan is designed to compare the two process yield indices of respective suppliers. A ratio statistic of two yield indices is proposed for estimated linear profiles under normal assumptions. The operating characteristic function is derived by using the distribution of the ratio statistic. Designed parameters are optimized to minimize the sample size required.

“…Wang proposed two new indices C puA and C plA to measure the process yield for simple linear profiles with one‐sided specifications. Regarding two‐process selection problem for linear profiles with one‐sided specifications can be found in the literature . However, the process selection problem for linear profiles may include more than two suppliers.…”

Section: Introductionmentioning

confidence: 99%

“…Regarding two-process selection problem for linear profiles with one-sided specifications can be found in the literature. 15,16 However, the process selection problem for linear profiles may include more than two suppliers. Thus, a new method is needed to solve this issue.…”

Section: Introductionmentioning

confidence: 99%

Multiple Comparisons with the Best for Process Selection for Linear Profiles with One-sided Specifications

Qual. Reliab. Engng. Int.

Tamirat

2015

Self Cite

In this study, we propose the multiple comparisons with the best method based on the yield index to compare the process yields of K (K ≥ 2) suppliers for linear profiles with one‐sided specifications. The performance analysis of the proposed method is conducted. The numbers of profiles required for different power levels are also provided. A simulated data set from a leather dyeing process is presented to illustrate the applicability of the proposed method. Copyright © 2015 John Wiley & Sons, Ltd.