pirls.rho.pv: Two-way weighted correlation with plausible values

In dickli/intsvy2: International Assessment Data Manager 2

Description

pirls.rho.pv calculates the correlation and standard error among two achievement variables each based on 5 plausible values or one achievement variable and an observed variable (i.e., with observed scores rather than plausible values).

Usage

pirls.rho.pv(variable, pvlabels, by, 
data, export = FALSE, name = "output", folder = getwd())

Arguments

variable	A data label for the observed variable (e.g., variable="ASDAGE")
pvlabels	One or two labels describing the achievement variables (e.g., pvlabels = c("ASRLIT", "ASRINF") )
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 PIRLS.
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

pirls.rho.pv returns a matrix with correlations and standard errors.

See Also

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

Examples

## Not run: 
# Exhibit A.15 p.309 in International report 2006
pirls.rho.pv(pvlabels=c("ASRLIT", "ASRINF"), by="IDCNTRYL", data=pirls)

## End(Not run)

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