3 ...</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  $ education: Factor w/ 4 levels "Totale","I","II",..: 1 2 3 4 1 2 3 4 1 2 ...</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  $ n        : int [1:12] 1000 172 719 109 547 60 409 78 453 112 ...</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  - attr(*, ".variables")= chr [1:2] "gender" "education"</span>
<span class="r-in"><span><span class="fu">only_joint</span><span class="op">(</span><span class="va">tmp</spa