An effective strategy for the analysis of response profiles
- Quality Engineering
- February 2021
- Volume 33 Issue 1
- pp. 85-99
- Snee, Ronald D.
The copyright of this article is not held by ASQ.
An effective strategy for the analysis and comparison of profiles is proposed and illustrated with case studies. This useful strategy makes effective use of profile data by using all the data in each individual profile to create two statistics that describe the profile behavior: Profile “Level” and Profile “Shape.” The profile Level relates to the area under the profile. The Shape statistic is related to the rate of increase of the profile over time. These characteristics enable practical interpretations regarding the factors studied in the experiment. The method is easy to use requiring only straight line regression and design of experiments analysis procedures. A Modified Principal Component Analysis is recommended as an alternative approach to create profile level and shape statistics when the linearized profile model does not give an adequate description of the data.