Item response theory - How examinee scoring works
Автор: Assessment Systems
Загружено: 2020-10-25
Просмотров: 8430
Описание:
This video provides a brief visual explanation about how item response theory (IRT) is used to score examinees on a latent ability/trait, aka theta. It does this by using the Item Response Functions.
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I forgot to mention it in the video, but the approach shown here is called Brute Force Scoring. Many software systems make use of the Newton-Raphson algorithm for iteratively finding the maximum of a function, which can be less computationally intensive. But that's outside the scope of this video.
Want a copy of the spreadsheet used here? Visit https://assess.com/irt-scoring-spread....
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![Item Response Theory: The Math Behind Standardized Tests [Lecture]](https://image.4k-video.ru/id-video/n4W4Gwwkbqg)
