Question: Compare the conditional probability from Exercise 7.20 with the unconditional probability of dropping out of school. Exercise 7.20 How might you use conditional probabilities to
Compare the conditional probability from Exercise 7.20 with the unconditional probability of
dropping out of school.
Exercise 7.20
How might you use conditional probabilities to determine if an ADDSC cutoff score in
Appendix D of 66 is predictive of whether or not a person will drop out of school?
Appendix D

ADDSC GENDER REPEAT IQ ENGL ENGG GPA SOCPROB DROPOUT Average of three ADD-like behavior scores 1 = male; 2 = female 1 = repeated at least one grade; 0 = did not repeat IQ obtained from a group-administered IQ test Level of English in ninth grade: 1 = college prep; 2 = general; 3 = remedial Grade in English in ninth grade: 4 = A, etc. Grade point average in ninth grade Social problems in ninth grade: 1 = yes; 0 = no 1 = dropped out before completing high school; 0 = did not drop out
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