pisa.rho: Correlation matrix

In dickli/intsvy2: International Assessment Data Manager 2

Description

pisa.rho produces a correlation matrix for observed variables (NOT for plausible values) Use the pisa2015.rho() for data from PISA 2015 study.

Usage

pisa.rho(variables, by, data, export=FALSE, name= "output", folder=getwd())
pisa2015.rho(variables, by, data, export=FALSE, name= "output", folder=getwd())

Arguments

variables	Data labels for the variables in the correlation matrix (e.g., variables=c("TCHBEHTD", "TCHBEHSO"))
by	The label for the grouping variable, usually the countries (i.e., by="IDCNTRYL"), but could be any other categorical variable.
data	An R object, normally a data frame, containing the data from PISA.
export	A logical value. If TRUE, the output is exported to a file in comma-separated value format (.csv) that can be opened from LibreOffice or Excel.
name	The name of the exported file.
folder	The folder where the exported file is located.

Value

pisa.rho returns a matrix including correlation and standard error values.

See Also

timss.rho, pirls.rho, pirls.rho.pv, timss.rho.pv

Examples

## Not run: 
pisa.rho(variables=c("COGACT", "TCHBEHTD", "TCHBEHSO", "CLSMAN" ), by="IDCNTRYL", data=pisa)
pisa2015.rho(variables=c("AGE", "PV1MATH"), by="CNT", data=stud2015)

## End(Not run)

dickli/intsvy2 documentation built on Sept. 8, 2020, 12:05 a.m.