DISCRIMINATION_PARAMETER

Business Definition

IRT discrimination parameter (a) indicating how steeply the item's probability curve rises with ability. Higher values mean the item differentiates well between ability levels; lower values indicate flatter response curves. This parameter influences item selection in adaptive tests. Null for non-IRT items.

Data Type

FLOAT

Nullable

Yes

Last Updated

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