Descriptor
| Correlation | 1 |
| Measurement Techniques | 1 |
| Psychometrics | 1 |
| Reliability | 1 |
| Simulation | 1 |
| Statistical Analysis | 1 |
| Test Items | 1 |
Source
| Psychometrika | 1 |
Author
| Hayashi, Kentaro | 1 |
| Kamata, Akihito | 1 |
Publication Type
| Journal Articles | 1 |
| Reports - Research | 1 |
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Peer reviewed
Direct linkHayashi, Kentaro; Kamata, Akihito – Psychometrika, 2005
The asymptotic standard deviation (SD) of the alpha coefficient with standardized variables is derived under normality. The research shows that the SD of the standardized alpha coefficient becomes smaller as the number of examinees and/or items increase. Furthermore, this research shows that the degree of the dependence of the SD on the number of…
Descriptors: Correlation, Statistical Analysis, Measurement Techniques, Simulation
