195</span>, <span class="fl">40</span><span class="op">)</span>, label_size <span class="op">=</span> <span class="fl">8</span><span class="op">)</span></span></code></pre></div>
<p><img src="maturity-model_files/figure-html/unnamed-chunk-14-1.png" alt="plot coef" width="768"></p>
<p>Another option (<code>type = 4</code>) shows the fitted curve (black
line), confidence interval (blue-dashed line), and prediction interval
(red-dashed line). Additionally, setting type = 5 displays the first
derivative, indica