Descriptor
| Algorithms | 1 |
| Comparative Analysis | 1 |
| Elementary Secondary Education | 1 |
| Equations (Mathematics) | 1 |
| Estimation (Mathematics) | 1 |
| Mathematical Models | 1 |
| Science Education | 1 |
| Science Tests | 1 |
| Scoring | 1 |
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| Journal of Educational… | 1 |
Author
| Adams, Raymond J. | 1 |
| Wilson, Mark | 1 |
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| Journal Articles | 1 |
| Reports - Evaluative | 1 |
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Peer reviewedWilson, Mark; Adams, Raymond J. – Journal of Educational Statistics, 1993
A marginal maximum likelihood estimation algorithm is presented for the ordered partition model of M. Wilson that does not require the set of available responses to be fully ordered. The model and its estimation algorithm are illustrated in a comparison of alternative scoring schemes for open-ended science items. (SLD)
Descriptors: Algorithms, Comparative Analysis, Elementary Secondary Education, Equations (Mathematics)
