- CFA Exams
- CFA Level I Exam
- Study Session 3. Quantitative Methods (2)
- Reading 8. Big Data Projects
- Subject 3. Data Exploration Objectives and Methods
CFA Practice Question
Which method tests the independence of occurrence of the token and occurrence of the class in text data?
A. Document frequency
B. Chi-square test
C. Mutual information
Explanation: Chi Square Test is used in statistics to test the independence of two events. In feature selection, the two events are occurrence of the feature and occurrence of the class.
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