RALSA

R Analyzer for Large-Sacale Assessments

Package for preparing and analyzing data from large-scale assessments.

Installation

RALSA is hosted on CRAN and can be installed from within R using:

install.packages("RALSA", dependencies = TRUE)

Websites

The main INERI website

RALSA's dedicated website

Contact

For questions, feature requests, training requests and bug reports, please write to ralsa@ineri.org

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Version

Install

install.packages('RALSA')

Monthly Downloads

361

Version

1.6.2

License

GPL-2

Maintainer

Plamen V. Mirazchiyski

Last Published

January 30th, 2026

Functions in RALSA (1.6.2)

lsa.convert.data

Convert Large-Scale Assessments' Datasets to .RData Format

lsa.aggregate.vars

Aggregate variables in LSA datasets

lsa.download.data

Download large-scale assessment and survey data

lsa.bench

Compute percentages of respondents reaching or surpassing certain ability cut-off scores

lsa.corr

Compute correlations between variables within specified groups

lsa.cut.vars

Cut continuous variables into discrete categorical

lsa.crosstabs

Compute crosstabulations and design corrected chi-square statistics

RALSA

R Analyzer for Large-Scale Assessments (RALSA)

lsa.data.diag

Produce data diagnostic tables

lsa.bin.log.reg

Compute binary logistic regression coefficients specified groups

lsa.merge.data

Merge study data from different countries and/or respondents

ralsaGUIfailsafe

Start RALSA's Graphical User Interface (GUI) in a failsafe mode

lsa.pcts.means

Compute percentages of respondents in groups and/or means (arithmetic average, median or mode) on continuous variables within specified groups

lsa.recode.vars

Recode variables in large-scale assessments' data sets

lsa.vars.dict

Produce dictionary for large-scale assessments data variables

ralsaGUI

Start RALSA's Graphical User Interface (GUI)

lsa.lin.reg

Compute linear regression coefficients specified groups

lsa.prctls

Compute percentiles of continuous variables within groups