Descriptor
| Achievement Tests | 1 |
| Comparative Analysis | 1 |
| Error of Measurement | 1 |
| Mathematical Models | 1 |
| Probability | 1 |
| Statistical Analysis | 1 |
| Test Items | 1 |
| Test Theory | 1 |
| Testing Problems | 1 |
| True Scores | 1 |
Source
Author
| Wilcox, Rand R. | 1 |
Publication Type
| Reports - Evaluative | 1 |
| Reports - Research | 1 |
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Wilcox, Rand R. – 1978
Two fundamental problems in mental test theory are to estimate true score and to estimate the amount of error when testing an examinee. In this report, three probability models which characterize a single test item in terms of a population of examinees are described. How these models may be modified to characterize a single examinee in terms of an…
Descriptors: Achievement Tests, Comparative Analysis, Error of Measurement, Mathematical Models
