Outliers in Assessments
- Author(s):
- Haberman, Shelby J.
- Publication Year:
- 2008
- Report Number:
- RR-08-41
- Source:
- ETS Research Report
- Document Type:
- Report
- Page Count:
- 15
- Subject/Key Words:
- Regression (Statistics), Data Analysis, Outliers (Statistics)
Abstract
Outliers in assessments are often treated as a nuisance for data analysis; however, they can also assist in quality assurance. Their frequency can suggest problems with form codes, scanning accuracy, ability of examinees to enter responses as they intend, or exposure of items.
Read More
- Request Copy (specify title and report number, if any)
- http://dx.doi.org/10.1002/j.2333-8504.2008.tb02127.x