In the probit model Pr(Y = 1|X1, X2,..., Xk) = ?(?0 + ?1X1 + ?2X2 + ... + ?kXk),
A) the ?'s do not have a simple interpretation.
B) the slopes tell you the effect of a unit increase in X on the probability of Y.
C) ?0 cannot be negative since probabilities have to lie between 0 and 1.
D) ?0 is the probability of observing Y when all X's are 0
Ans: A) the ?'s do not have a simple interpretation.
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