DatMB {Frames2}

Database of students' program choice for frame B

Description

This dataset contains some variables regarding the program choice for a sample of 232 students included in the sampling frame B.

Usage

DatMB

Format

Id_Pop

An integer from 1 to N, with N the number of students in the whole population, identifying the student within the population.

Id_Frame

An integer from 1 to N_B, with N_B the number of students in the frame, identifying the student within the frame.

Prog

A factor with three categories (academic, general and vocation) indicating the program choice of the student.

Ses

An ordinal factor with three categories (low, middle and high) indicating the socio-economical status of the student.

Read

A number indicating the mark of the student in a reading test.

Write

A number indicating the mark of the student in a writing test.

Sch_Size

A number indicating the size of the school the students belongs to.

Domain

A string indicating the domain each student belongs to. Possible values are "b" if student belongs to domain b or "ba" if student belongs to overlap domain.

ProbA

First order inclusion probability in frame A. This probability is 0 for students included in domain b.

ProbB

First order inclusion probability in frame B.

Details

The sample, of size n_B = 232, has been drawn from a population of N_B = 6500 students according to a simple random sampling design. N_{ab} = 2000 of the students composing the population belongs also to frame A.

See Also

DatPopM

Examples

data(DatMB)
attach(DatMB)
#Let perform a brief descriptive analysis for the main variable
summary (Prog)
#And let do the same for the numerical auxiliary variables Read and Write
summary(Read)
summary(Write)