timss.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.

Usage

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

Arguments

variable	The label corresponding to the observed variable, for example, "ASDAGE", for the age of the student.
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 TIMSS.
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

timss.mean returns a data frame with means and standard errors.

See Also

pirls.mean, pisa.mean

Examples

## Not run: 
# TIMSS G4: Exhibit 8.1 International Report TIMSS 2011, p. 330
timss.mean(variable='ASBGSLM', by='IDCNTRYL', data=timss4g)

# TIMSS G8: Exhibit 2.17 User Guide TIMSS 2011, p. 27
timss.mean(variable='BSBGSLM', by='IDCNTRYL', data=timss8g)

## End(Not run)

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