From cb695729906cf7822fe38fa93e5be25055430dc4 Mon Sep 17 00:00:00 2001
From: Raffaele Mancuso <raffaele.mancuso4@unibo.it>
Date: Sat, 12 Jul 2025 08:34:36 +0200
Subject: [PATCH] Specify what ranef and coef shows

---
 random_intercepts.Rmd | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/random_intercepts.Rmd b/random_intercepts.Rmd
index 05d614b..ba3536f 100644
--- a/random_intercepts.Rmd
+++ b/random_intercepts.Rmd
@@ -326,6 +326,8 @@ extract_random_effects(gpa_mixed) %>%
   kable_df(align = 'r')
 ```
 
+This shows the deviation of each student from the "grand intercept", that is, what we called $\mathrm{effect}_{\mathrm{student}}$.
+
 ```{r randints, eval=FALSE}
 coef(gpa_mixed)$student %>% head(5)
 ```
@@ -336,6 +338,7 @@ extract_random_coefs(gpa_mixed) %>%
   kable_df(align = 'rr')
 ```
 
+This shows the overall intercept for each student, that is, what we called $b_{\mathrm{int\_student}}$.
 
 Note that we did not allow occasion to vary, so it is a constant, i.e. *fixed*, effect for all students.