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<code><a href="reference/case_delete.default.html">case_delete()</a></code> iteratively deletes observations or groups of observations, returning a list of fixed and random components from the original model and the models created by deletion.</li>
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<code><a href="reference/hlm_influence.default.html">hlm_influence()</a></code> calculates all of the influence diagnostics, returning a tibble with the influence values appended to the original model frame.</li>
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<code><a href="reference/hlm_augm