This dataset contains some variables regarding the program choice for a sample of 180 students included in the sampling frame A.
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An integer from 1 to N, with N the number of students in the whole population, identifying the student within the population.
An integer from 1 to N_A, with N_A the number of students in the frame, identifying the student within the frame.
A factor with three categories (academic, general and vocation) indicating the program choice of the student.
An ordinal factor with three categories (low, middle and high) indicating the socio-economical status of the student.
A number indicating the mark of the student in a reading test.
A number indicating the mark of the student in a writing test.
A number indicating the size of the school the students belongs to.
A string indicating the domain each student belongs to. Possible values are "a" if student belongs to domain a or "ab" if student belongs to overlap domain.
First order inclusion probability in frame A.
First order inclusion probability in frame B. This probability is 0 for students included in domain a.
The sample, of size n_A = 180, has been drawn from a population of N_A = 5500 students according to a proportional-to-size sampling desing according to the size of the school. So, students attending bigger schools have a higher probability of being selected in the sample. N_{ab} = 2000 of the students composing the population belongs also to frame B.
DatPopM
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