On Lack of Fit
作者:
NormanR. Draper,
AgnesM. Herzberg,
期刊:
Technometrics
(Taylor Available online 1971)
卷期:
Volume 13,
issue 2
页码: 231-241
ISSN:0040-1706
年代: 1971
DOI:10.1080/00401706.1971.10488779
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Response surface designs are often used with a number of added center points. In such cases, when the basic design without center points is non-singular, a useful split of the lack of fit sum of squares can be effected which isolates the contribution of a contra between center and non-center points and enables additional information on possible biases to be obtained. Two general examples illustrate this, and some numerical illustrations are also provided.
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