Notes on Test Theory
- Author(s):
- Keats, John A.
- Publication Year:
- 1955
- Report Number:
- RB-55-19
- Source:
- ETS Research Bulletin
- Document Type:
- Report
- Page Count:
- 19
- Subject/Key Words:
- Error of Measurement, Scores, Test Theory
Abstract
The representation of test scores as n dimensional points leads directly to an estimate of error variance at a particular score level in the case of equivalent items. Approximations are suggested for the case of non-equivalent items. These approximations are compared with empirical data prepared by Dr. Mollenkopf with satisfactory results.
Read More
- Request Copy (specify title and report number, if any)
- http://dx.doi.org/10.1002/j.2333-8504.1955.tb00262.x