igure-html/unnamed-chunk-2-3.png" class="img-fluid figure-img" width="672"></a></p>
<figcaption><code>wage ~ married</code></figcaption>
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<figcaption class="quarto-float-caption-bottom quarto-float-caption quarto-float-fig" id="fig-single-categorical-caption-0ceaefa1-69ba-4598-a22c-09a6ac19f8ca">
Figure&nbsp;10.4: Examples of regression models with a single categorical explanatory variable.
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<p>When the explanatory variable is quantit