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ILSAstats

Calculates point estimates and standard errors using replicate weights and plausible values for International Large-Scale Assessments (ILSA), including: means, proportions, quantiles, correlations, singlelevel regressions, and multilevel regressions.

Installation

You can install the stable version of ILSAstats directly from CRAN:

install.packages("ILSAstats")

Or, if you wish to install the development version of ILSAstats:

remotes::install_github("dopatendo/ILSAstats")

Create replicate weights

Before working with replicate weights statistics we need to be sure to create the replicate weights (if they are not provided within the data). For an example on how to create them see vignette("repweights").

Setup

When doing multiple estimations we may need to use the same options more than one time. For an example on how to create a setup object for ILSAstats see vignette("setup").

Means

For an example on estimating means using replicate weights and plausible values see vignette("means").

Proportions

For an example on estimating proportions using replicate weights and plausible values see vignette("proportions").

Quantiles

For an example on estimating quantiles using replicate weights and plausible values see vignette("quantiles").

Correlations

For an example on estimating correlations using replicate weights and plausible values see vignette("correlations").

League tables

For an example on estimating league tables automatically see vignette("leaguetables").

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Version

Install

install.packages('ILSAstats')

Monthly Downloads

477

Version

0.4.5

License

GPL (>= 3)

Maintainer

Andrés Christiansen

Last Published

April 3rd, 2026

Functions in ILSAstats (0.4.5)

repmeandif

Mean Difference of Independent Samples with Replicate Weights
repprop.table

Tables for Proportions with Replicate Weights
repdata

Simulated data with 5000 cases
repprop

Proportions with Replicate Weights
repquant

Quantiles with Replicate Weights
repcreate

Creation of Replicate Weights
repglm

Generalized Linear Models with Replicate Weights
repmean

Mean, Variance and Standard Deviation with Replicate Weights
repmeanCI

Confidence Intervals for Replicated Means
replm

Linear Models with Replicate Weights
reprho

Correlations with Replicate Weights
repse

Standard Error for Estimates with Replicate Weights and Plausible Values
repsetup

Setup for Analysis with Replicate Weights
timss99

Random TIMSS 99 data with 3000 cases and 3 countries
prepILSA

Prepare ILSA Data
proflevels.get

Get ILSA's proficiency levels
center

Centering
ILSAinfo

ILSA information
proflevels

ILSA's proficiency levels
leaguetable

ILSA's league tables
WeMixPV

Survey Weighted Mixed-Effects Models with Plausible Values
autoILSA

Options for automatic functions
icc

Intraclass Correlation Coefficient
lmerPV

Linear Mixed-Models with Plausible Values