pirls.per.pv {intsvy}

PIRLS percentiles

Description

Calculates percentiles for plausible values

Usage

  pirls.per.pv(pvlabel, by, per, data, export=FALSE, 
  name= "output", folder=getwd())

Arguments

pvlabel

The names of columns corresponding to the achievement plausible scores.

per

User-defined percentiles (e.g., per = c(5, 10, 25, 75, 90, 95)).

by

The label of the categorical grouping variable (e.g., by="IDCNTRYL") or variables (e.g., by=c("IDCNTRYL", "ITSEX")).

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.per.pv returns a data frame with percentiles and associated standard errors. Default weights (e.g. "TOTWGT" in TIMSS) and percentiles are specified in the config parameter.

See Also

pisa.per.pv, timss.per.pv

Examples

  ## Not run: 
    pirls.per.pv(pvlabel=paste0("ASRREA0", 1:5), 
    per = c(5, 10, 25, 50, 75, 90, 95), by="IDCNTRYL", data=pirls)
  
## End(Not run)