It is common to start with linear analysis then, depending on the results from the Box test, to carry out quadratic analysis if required. The Box test is used to test this hypothesis (the Bartlett approximation enables a Chi2 distribution to be used for the test). If, on the contrary, it is assumed that the covariance matrices differ in at least two groups, then the quadratic discriminant analysis should be preferred. What is the difference between Linear and Quadratic Discriminant Analysis? Two models of Discriminant Analysis are used depending on a basic assumption: if the covariance matrices are assumed to be identical, linear discriminant analysis is used. Discriminant Analysis may be used in numerous applications, for example in ecology and the prediction of financial risks (credit scoring).
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Discriminant Analysis (DA) statistical software for Excel VIEW ALL TUTORIALS What is Discriminant Analysis? Discriminant Analysis (DA) is a statistical method that can be used in explanatory or predictive frameworks: Check on a or chart if the groups to which observations belong are Show the properties of the groups using explanatory Predict which group a new observation will belong to. Preview text Discriminant Analysis (DA) statistical software for Excel Home Products Features Overview Discriminant Analysis (DA) Discriminant Analysis (DA) Discriminant analysis is a popular explanatory and predictive data analysis technique that uses a qualitative variable as an output.
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