---
title: "Item Response Theory"
type: concept
source: https://www.jemoka.com/posts/kbhitem_response_theory/
confidence: high
status: active
---

If a student has ability \(a\), and a probably is \(d\) difficulty, the probability of a student getting something right:
\begin{equation} \sigma (a-d) \end{equation}
this doesn&rsquo;t consider SLIPPING at all.
