DatMB: Database of students' program choice for frame B

In Frames2: Estimation in Dual Frame Surveys

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)

Example output

Attaching package: ‘Frames2’

The following object is masked from ‘package:methods’:

    Compare

academic  general vocation 
     162       18       52 
   Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
  28.00   45.00   52.00   53.47   63.00   76.00 
   Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
  31.00   45.50   54.00   53.15   61.25   67.00 

Frames2 documentation built on May 2, 2019, 8:13 a.m.