span> (rng[<span class="dv">2</span>] <span class="sc">-</span> rng[<span class="dv">1</span>])</span>
<span id="cb16-4"><a href="#cb16-4" tabindex="-1"></a>}</span>
<span id="cb16-5"><a href="#cb16-5" tabindex="-1"></a>df <span class="ot">&lt;-</span> <span class="fu">tibble</span>(<span class="at">x =</span> <span class="dv">1</span><span class="sc">:</span><span class="dv">4</span>, <span class="at">y =</span> <span class="fu">rnorm</span>(<span class="dv">4</span>))</span>
<span id="cb16-6"><a href="#cb