DISCRIMAb - 1 Ch 14: Discriminant Analysis - discriminant...

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1 Ch 14: Discriminant Analysis - discriminant analysis identifies relationships between qualitative Y variables and quantitative X variables - predicting party affiliation from income - prediction of clinical diagnostic categories - two objectives of discrim. analysis (same as reg/ANOVA): - determine variables related to Y - predict values on the Y variable Qualitative/Categorical Y Variable - every object/person must belong to one category (e.g.: political party), and there must be two or more - numbers in each category don’t have to be equal - the goal of discrim. analysis is to predict which category a given person belongs to – this prediction is based on…
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2 Quantitative/continuous Predictor Variables - a set of attributes on which the objects/people vary - to predict disease (temperature, bp, pulse, age, etc.) - car choice (income, family size, miles driven a year) - variables are chosen because we think they are related to the categorical Y
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3 The Central Concept – The Discriminant Function
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This note was uploaded on 04/02/2008 for the course PSY 400 taught by Professor Rogers during the Winter '08 term at Grand Valley State University.

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DISCRIMAb - 1 Ch 14: Discriminant Analysis - discriminant...

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