 2 2 1 1 2 1 2 1 ...</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  $ education     : Factor w/ 3 levels "I","II","III": 3 2 2 2 2 1 3 1 2 2 ...</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  $ wage          : num [1:1000] 8400 4200 5100 7400 4300 4900 5400 2900 4500 3000 ...</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  $ sample_weights: num [1:1000] 105 32 36 12 21 46 79 113 34 32 ...</span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><