lot_resid</span><span class='op'>(</span><span class='va'>model_fitted</span>, <span class='va'>model_resid</span>, <span class='va'>title</span><span class='op'>)</span>

<span class='fu'>plot_qq</span><span class='op'>(</span><span class='va'>model_resid</span>, <span class='va'>theo_quan</span>, <span class='va'>title</span><span class='op'>)</span>

<span class='fu'>plot_gcvv</span><span class='op'>(</span><span class='va'>x_var</span>, <span class='va'>y_var</span>, <span class='va'>lab</span>, <span c