PSEUDOGUESSING_PARAMETER_C

Business Definition

IRT pseudo-guessing parameter © representing the probability of a low-ability examinee answering correctly by chance (lower asymptote). Commonly used in 3PL models for multiple-choice items. Values near 0 indicate minimal guessing; values near 0.25 suggest strong guessing effects. Null for constructed-response or non-3PL items.

Data Type

FLOAT

Nullable

Yes

Last Updated

2026-01-13T04:05:42 by LEARNOSITY_ITEMS_DIM_ANALYSIS