With conventional coding in logistic regression of 0 and 1, if there are 100 cases and 40 are coded as 1, what is the mean of the variable?
A) 40
B) .4
C) 2.5
D) 25

Question

Quizplus · Accepted Answer

In logistic regression coding of 0 and 1, the variable represents the probability of a success (i.e., being coded as 1) given the values of the predictor variables. Therefore, the mean of the variable in a sample of 100 cases with 40 coded as 1 would be the proportion of 1's, which is 40/100 = 0.4.

With Conventional Coding in Logistic Regression of 0 and 1