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Specify what ranef and coef shows #26

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Specify what ranef and coef shows #26

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3 changes: 3 additions & 0 deletions random_intercepts.Rmd
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Expand Up @@ -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)
```
Expand All @@ -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.

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