bdf {nlme}R Documentation

Language scores

Description

The bdf data frame has 2287 rows and 25 columns of language scores from grade 8 pupils in elementary schools in The Netherlands.

Usage

data(bdf)

Format

schoolNR
a factor denoting the school.
pupilNR
a factor denoting the pupil.
IQ.verb
a numeric vector of verbal IQ scores
IQ.perf
a numeric vector of IQ scores.
sex
Sex of the student.
Minority
a factor indicating if the student is a member of a minority group.
repeatgr
an ordered factor indicating if one or more grades have been repeated.
aritPRET
a numeric vector
classNR
a numeric vector
aritPOST
a numeric vector
langPRET
a numeric vector
langPOST
a numeric vector
ses
a numeric vector of socioeconomic status indicators.
denomina
a factor indicating of the school is a public school, a Protestant private school, a Catholic private school, or a non-denominational private school.
schoolSES
a numeric vector
satiprin
a numeric vector
natitest
a factor with levels 0 and 1
meetings
a numeric vector
currmeet
a numeric vector
mixedgra
a factor indicating if the class is a mixed-grade class.
percmino
a numeric vector
aritdiff
a numeric vector
homework
a numeric vector
classsiz
a numeric vector
groupsiz
a numeric vector

Source

http://stat.gamma.rug.nl/snijders/multilevel.htm

References

Snijders, Tom and Bosker, Roel (1999), Multilevel Analysis: An Introduction to Basic and Advanced Multilevel Modeling, Sage.

Examples

summary(bdf)

[Package nlme version 3.1-80 Index]