pisa.mean: Calculates mean of variable

In dickli/intsvy2: International Assessment Data Manager 2

Description

Calculates the mean of an observed variable (NOT one with plausible values) and its standard error. Use the pisa2015.mean() for data from PISA 2015 study.

Usage

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

Arguments

variable	The label corresponding to the observed variable, for example, ""ESCS"", for the student SES.
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.mean returns a data frame with means and standard errors.

See Also

timss.mean, pirls.mean, piaac.mean

Examples

## Not run: 
# PISA 2012: Table II.2.3, p. 183
pisa.mean(variable="ESCS", by="IDCNTRYL", data=pisa)
pisa.mean(variable="PARED", by="IDCNTRYL", data=pisa)

# PISA 2012: Table III.2.3d, p. 252
pisa.mean(variable="BELONG", by="IDCNTRYL", data=pisa)
pisa.mean(variable="BELONG", by=c("IDCNTRYL", "ST04Q01"), data=pisa)

# PISA 2015
pisa2015.mean(variable="AGE", by="CNT", data=stud2015)

## End(Not run)

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