Letter to Editor

Estimation of income with using Ridge Regression analysis in layer hen industry

Volume: 62 Number: 1 March 1, 2015
  • Aytaç Akçay
  • Savaş Sarıözkan
TR EN

Estimation of income with using Ridge Regression analysis in layer hen industry

Abstract

The aim of this study was to estimate the sale income using age, survival rate, egg weight and production data in layer hen industry. The egg prices were obtained from Kayseri Tavukçuluk Sanayi ve Ticaret A.Ş. (Kaytaş).The performance values of Bovans White hybrid were used in the analysis. The results of the study showed the presence of multi-collinearity problem due to, correlation coefficients between independent variables are close to 1, condition number is over 1000 (1463.5) and variance inflation factor (VIF) values of three independent variables are over 10 (264.7; 259.7 and 10.9). Due to multi-collinearity problem, data were analyzed with ridge regression (RR) method which is alternative to least squares regression (LSR) and compared each other. Income estimation with LSR method before removing the independent variables which are in multi-collinearity with each other the model's coefficient of determination is calculated as R2 = 0.99; while the R2 = 0.98 with selected Ƙ value with using RR method. In addition; standard errors of the regression coefficients of independent variables were lower in RR method. In conclusion, RR method provided, lower standard errors, more stable, consistent and suitable estimates compared to LSR method

Keywords

References

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Details

Primary Language

English

Subjects

Veterinary Surgery

Journal Section

Letter to Editor

Authors

Aytaç Akçay This is me

Savaş Sarıözkan This is me

Publication Date

March 1, 2015

Submission Date

March 1, 2015

Acceptance Date

-

Published in Issue

Year 2015 Volume: 62 Number: 1

APA
Akçay, A., & Sarıözkan, S. (2015). Estimation of income with using Ridge Regression analysis in layer hen industry. Ankara Üniversitesi Veteriner Fakültesi Dergisi, 62(1), 69-74. https://doi.org/10.1501/Vetfak_0000002660
AMA
1.Akçay A, Sarıözkan S. Estimation of income with using Ridge Regression analysis in layer hen industry. Ankara Univ Vet Fak Derg. 2015;62(1):69-74. doi:10.1501/Vetfak_0000002660
Chicago
Akçay, Aytaç, and Savaş Sarıözkan. 2015. “Estimation of Income With Using Ridge Regression Analysis in Layer Hen Industry”. Ankara Üniversitesi Veteriner Fakültesi Dergisi 62 (1): 69-74. https://doi.org/10.1501/Vetfak_0000002660.
EndNote
Akçay A, Sarıözkan S (March 1, 2015) Estimation of income with using Ridge Regression analysis in layer hen industry. Ankara Üniversitesi Veteriner Fakültesi Dergisi 62 1 69–74.
IEEE
[1]A. Akçay and S. Sarıözkan, “Estimation of income with using Ridge Regression analysis in layer hen industry”, Ankara Univ Vet Fak Derg, vol. 62, no. 1, pp. 69–74, Mar. 2015, doi: 10.1501/Vetfak_0000002660.
ISNAD
Akçay, Aytaç - Sarıözkan, Savaş. “Estimation of Income With Using Ridge Regression Analysis in Layer Hen Industry”. Ankara Üniversitesi Veteriner Fakültesi Dergisi 62/1 (March 1, 2015): 69-74. https://doi.org/10.1501/Vetfak_0000002660.
JAMA
1.Akçay A, Sarıözkan S. Estimation of income with using Ridge Regression analysis in layer hen industry. Ankara Univ Vet Fak Derg. 2015;62:69–74.
MLA
Akçay, Aytaç, and Savaş Sarıözkan. “Estimation of Income With Using Ridge Regression Analysis in Layer Hen Industry”. Ankara Üniversitesi Veteriner Fakültesi Dergisi, vol. 62, no. 1, Mar. 2015, pp. 69-74, doi:10.1501/Vetfak_0000002660.
Vancouver
1.Aytaç Akçay, Savaş Sarıözkan. Estimation of income with using Ridge Regression analysis in layer hen industry. Ankara Univ Vet Fak Derg. 2015 Mar. 1;62(1):69-74. doi:10.1501/Vetfak_0000002660

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