[1]ZHANG Jianhua..A study on the correlation coefficient as a goodness-of-fit criterion[J].Journal of Zhengzhou University (Engineering Science),2001,22(03):72-74.[doi:10.3969/j.issn.1671-6833.2001.03.022]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
22卷
Number of periods:
2001年03期
Page number:
72-74
Column:
Public date:
1900-01-01
- Title:
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A study on the correlation coefficient as a goodness-of-fit criterion
- Author(s):
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ZHANG Jianhua.
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- Keywords:
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- CLC:
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- DOI:
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10.3969/j.issn.1671-6833.2001.03.022
- Abstract:
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In experimental data processing, the magnitude of the correlation coefficient is often used to express the criterion of linear fit. Through experimental illustration analysis and research, a good correlation coefficient does not necessarily mean a good straight-line fitting result, and a good linear fitting of experimental results does not necessarily mean a large correlation coefficient, indicating that the correlation coefficient should not be used as a criterion for the goodness-of-fit of experimental results. It is only meaningful if it is a regression coefficient, or when there is a variable that cannot be measured on a fixed scale.