Probit and logistic discriminant functions |
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| Authors: | A Albert J A Anderson |
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| Institution: | 1. Universite de Liege ,;2. University of Newcastle upon Tyne , |
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| Abstract: | Most discriminant functions refer to qualitatively district groups. Talis et al. (1975) introduced the probit discriminant function for distinguishing between two ordered groups. They showed how to estimate this function for mixture sampling and continuous predictor variables. Here an estimation system is given for the more common separate sampling which is applicable to continuous and/or discrete predictor variables. When used solely with continuous variables) this method of estimation is more robust than Tallis! The relationship of probit and logistic discrimination is discussed. |
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| Keywords: | quantitatively distinct groups discrete and continous predictor variables mixture and separate sampling maximum likelihood estimation measurement scales |
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