Unique Skill ID: KS121SY6BY7Q78ST3V3P

CHi-Squared Automatic Interaction Detection (CHAID)

Chi-square automatic interaction detection (CHAID) is a decision tree technique, based on adjusted significance testing. The technique was developed in South Africa and was published in 1980 by Gordon V. Kass, who had completed a PhD thesis on this topic. CHAID can be used for prediction as well as classification, and for detection of interaction between variables. CHAID is based on a formal extension of the United States' AID and THAID procedures of the 1960s and 1970s, which in turn were extensions of earlier research, including that performed in the UK in the 1950s.

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