| adjustments {NAEPirtparams} | R Documentation |
NAEP IRT item adjustments.
Description
This data table contains the item adjustment information that NAEP implemented in scaling from 2000 to 2013. The handful of items with responses that do not fit the item response models were deleted or had the scoring categories collapsed before the final scaling. To find all adjustments and deletions for an assessment, filter the data table by level, subject, and year. Assessments in 2000 also require filtering by accommodations.
Usage
adjustments
Format
A data frame with columns
- source
source of data, character
- level
grade or age level of test, integer
- levelType
"grade" or "age", character
- NAEPid
test item ID, character
- accommodations
"accom" or "no-accom", character
- subject
subject of test, character
- year
year of test, integer
- adjustment
"Collapsed" or "Deleted", character
- from
possible scores before adjustment, character
- to
possible scores after adjustment, character
References
Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 1990-2015, various subjects. Retrieved from https://nces.ed.gov/nationsreportcard/tdw/analysis/scaling_avoidviolat_treatment.aspx
Examples
## Not run:
adj <- NAEPirtparams::adjustments
adj8M2005 <- adj[adj$level == 8 & adj$subject == 'Mathematics' & adj$year == 2005, ]
head(adj8M2005)
source level levelType NAEPid accommodations subject year adjustment from to
189 website 8 grade M067202 <NA> Mathematics 2005 Deleted <NA> <NA>
190 website 8 grade M052801 <NA> Mathematics 2005 Deleted <NA> <NA>
191 website 8 grade M073602 <NA> Mathematics 2005 Deleted <NA> <NA>
200 website 8 grade M141301 <NA> Mathematics 2005 Collapsed 0,1,2,3 0,1,1,2
201 website 8 grade M085701 <NA> Mathematics 2005 Collapsed 0,1,2 0,0,1
202 website 8 grade M145101 <NA> Mathematics 2005 Collapsed 0,1,2,3 0,1,1,1
## End(Not run)