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| Achievement Tests | 1 |
| Data Analysis | 1 |
| Goodness of Fit | 1 |
| Junior High Schools | 1 |
| Latent Trait Theory | 1 |
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Samejima, Fumiko; Trestman, Robert L. – 1980
The first step of the data analysis with respect to the eventual application of the various new methods in latent trait theory is here initiated. The data are a set of approximately 500 item responses of each of 7,439 examinees to the Iowa Tests of Basic Skills, Form 6, on one of three difficulty levels, which correspond to the ages of 11, 12 and…
Descriptors: Achievement Tests, Data Analysis, Goodness of Fit, Junior High Schools
