Building Discriminate Function-Review
IRAQI JOURNAL OF STATISTICAL SCIENCES,
2020, Volume 17, Issue 31, Pages 110-127
Discriminant Analysis has been widely used to classify data into subgroups based on certain criteria. The classification process depends on choosing any variable that shows a statistical significance, then use the selected variables to build the discriminant function. In order to investigate the statistical significance of the variables in our data, we used Roy-Bose procedure for finding confidence intervals and t-test, which is one of the popular variable-selection methods in discriminant analysis. In addition, some other variable-selection techniques has been employed, namely, Forward-Selection, Backward-Selection, and Stepwise-Selection methods, which are usually used to select variables in linear regression analysis. Furthermore, a principal component analysis has been carried out for the purpose of choosing the variables with high statistical significance. The selected variables have been used to build the discriminant function.
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