Creates the bar chart of the cross-validated scores generated from the
        fit method and places a dashed horizontal line that represents the
        average value of the scores.

def draw(self, **kwargs):
        """
        Creates the bar chart of the cross-validated scores generated from the
        fit method and places a dashed horizontal line that represents the
        average value of the scores.
        """

        color = kwargs.pop("color", "b")
        width = kwargs.pop("width", 0.3)
        linewidth = kwargs.pop("linewidth", 1)

        xvals = np.arange(1, len(self.cv_scores_) + 1, 1)
        self.ax.bar(xvals, self.cv_scores_, width=width)
        self.ax.axhline(
            self.cv_scores_mean_, color=color,
            label="Mean score = {:0.3f}".format(self.cv_scores_mean_),
            linestyle='--', linewidth=linewidth
        )

        return self.ax